【科普】网线怎么选择？这篇文章你要看！
<section style="box-sizing: border-box;font-size: 16px;"><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="margin: 10px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-image: url("https://mmbiz.qpic.cn/mmbiz_jpg/p8CaKzvQibq5uRC2swicic7Ursv3caGBU7KiayrSrUKTuXQKGWz0c6jLcDPEyc83tKic5ZAmYQ8CKJ9FhLSwP96IGZA/640?wx_fmt=jpeg");background-position: 50% 50%;background-repeat: no-repeat;background-size: cover;background-attachment: scroll;width: 100%;margin-left: auto;margin-right: auto;box-sizing: border-box;"><section style="display: inline-block;width: 100%;vertical-align: top;overflow-x: auto;box-shadow: rgb(0, 0, 0) 0px 0px 0px;border-width: 0px;box-sizing: border-box;-webkit-overflow-scrolling: touch;"><section style="overflow: hidden;width: 200%;max-width: 200% !important;box-sizing: border-box;"><section style="display: inline-block;vertical-align: middle;width: 50%;box-sizing: border-box;" powered-by="xiumi.us"><section style="box-sizing: border-box;"><section style="display: inline-block;vertical-align: middle;width: 93%;box-sizing: border-box;height: 1px;"><br></section><section style="display: inline-block;vertical-align: middle;width: 7%;box-sizing: border-box;"><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"><svg xmlns="http://www.w3.org/2000/svg" x="0px" y="0px" viewbox="0 0 35 70" style="vertical-align: middle;max-width: 100%;box-sizing: border-box;" width="100%"><path style="box-sizing: border-box;" d="M0,35c0,19.3,15.7,35,35,35V0C15.7,0,0,15.7,0,35z M23.1,51.1L11.9,39.8l0,0l-4.9-4.9l15.9-15.9l4.9,4.9l-11,11l11.3,11.3L23.1,51.1z" fill="rgb(255,255,255)"/></svg></section></section></section></section></section><section style="display: inline-block;vertical-align: middle;width: 50%;box-sizing: border-box;" powered-by="xiumi.us"><section style="box-sizing: border-box;"><section style="display: inline-block;width: 100%;vertical-align: bottom;background-color: rgba(197, 17, 106, 0);padding-top: 10px;box-sizing: border-box;"><section style="text-align: right;margin-right: 0%;margin-bottom: -40px;margin-left: 0%;transform: translate3d(1px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: bottom;width: 15%;box-sizing: border-box;"><section style="margin-right: 0%;margin-bottom: 15px;margin-left: 0%;transform: translate3d(10px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="color: rgb(255, 255, 255);font-size: 32px;box-sizing: border-box;"><p style="box-sizing: border-box;"><span style="text-shadow: rgb(85, 18, 18) 2px 0px 2px;box-sizing: border-box;"><strong style="box-sizing: border-box;">网</strong></span></p></section></section></section><section style="display: inline-block;vertical-align: bottom;width: 15%;box-sizing: border-box;"><section style="margin-right: 0%;margin-bottom: 5px;margin-left: 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: center;color: rgb(255, 255, 255);font-size: 32px;box-sizing: border-box;"><p style="box-sizing: border-box;"><span style="text-shadow: rgb(85, 18, 18) 2px 0px 2px;box-sizing: border-box;"><strong style="box-sizing: border-box;">线</strong></span></p></section></section></section><section style="display: inline-block;vertical-align: bottom;width: 15%;box-sizing: border-box;"><section style="margin-right: 0%;margin-bottom: 12px;margin-left: 0%;transform: translate3d(-10px, 0px, 0px);text-align: left;box-sizing: border-box;" powered-by="xiumi.us"><section style="color: rgb(255, 255, 255);font-size: 32px;box-sizing: border-box;"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;vertical-align: top;background-image: linear-gradient(to left, rgba(123, 0, 0, 0.73), rgba(123, 0, 0, 0));box-sizing: border-box;"><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="text-align: right;margin: 25px 0% 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 55%;vertical-align: top;box-sizing: border-box;"><section style="text-align: justify;color: rgb(255, 255, 255);font-size: 14px;padding-right: 10px;padding-left: 10px;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;">大家在安防工作中，接触的最多的是什么？</p><p style="white-space: normal;box-sizing: border-box;">没错！就是今天的主角——网线。</p><p style="white-space: normal;box-sizing: border-box;">康康今天给大家科普一下网线的原理以及如何正确区分优劣网线。</p></section></section></section></section></section></section></section></section></section></section></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="margin: 10px 0%;text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: middle;width: auto;background-color: rgba(255, 255, 255, 0);line-height: 0;box-sizing: border-box;"><section style="opacity: 0.85;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 17px;height: 17px;vertical-align: top;overflow: hidden;background-color: rgb(65, 155, 139);box-sizing: border-box;"><br></section></section><section style="opacity: 0.6;margin-top: -8px;margin-right: 0%;margin-left: 0%;transform: translate3d(6px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 12px;height: 12px;vertical-align: top;overflow: hidden;background-color: rgb(65, 155, 139);box-sizing: border-box;"><br></section></section></section><section style="display: inline-block;vertical-align: middle;width: auto;background-color: rgba(255, 255, 255, 0);line-height: 0;letter-spacing: 0px;padding-right: 10px;padding-left: 10px;box-sizing: border-box;"><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;vertical-align: top;border-width: 0px;border-radius: 0px;border-style: none;border-color: rgb(62, 62, 62);line-height: 1;letter-spacing: 0px;box-sizing: border-box;"><section style="margin-right: 0%;margin-bottom: 4px;margin-left: 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: justify;color: rgb(65, 155, 139);letter-spacing: 2px;box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;">网线科普</strong></p></section></section><section style="margin-right: 0%;margin-left: 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(164, 198, 188);height: 1px;box-sizing: border-box;"><br></section></section><section style="opacity: 0.28;box-sizing: border-box;" powered-by="xiumi.us"><section style="color: rgb(65, 155, 139);font-size: 10px;line-height: 1.3;box-sizing: border-box;"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section></section></section><section style="display: inline-block;vertical-align: middle;width: auto;background-color: rgba(255, 255, 255, 0);line-height: 0;box-sizing: border-box;"><section style="opacity: 0.85;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 17px;height: 17px;vertical-align: top;overflow: hidden;background-color: rgb(65, 155, 139);box-sizing: border-box;"><br></section></section><section style="opacity: 0.6;margin-top: -8px;margin-right: 0%;margin-left: 0%;transform: translate3d(-6px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 12px;height: 12px;vertical-align: top;overflow: hidden;background-color: rgb(65, 155, 139);box-sizing: border-box;"><br></section></section></section></section><section style="margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;border-width: 2px;border-style: solid;border-color: transparent;padding: 10px;box-sizing: border-box;"><section style="line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;" powered-by="xiumi.us"><p style="text-indent: 0em;white-space: normal;box-sizing: border-box;"><span style="color: rgb(113, 112, 113);font-size: 15px;text-indent: 2em;letter-spacing: 1.2px;box-sizing: border-box;">网线的作用从广义上来讲，主要是用来连接局域网。</span></p><p style="text-indent: 0em;white-space: normal;box-sizing: border-box;"><span style="font-size: 15px;color: rgb(113, 112, 113);box-sizing: border-box;">网线的分类主要有<span style="color: rgb(65, 155, 139);box-sizing: border-box;">双绞线、同轴电缆、光缆</span>三种，<span style="color: rgb(65, 155, 139);box-sizing: border-box;">同轴电缆、光缆</span>也属于网线的一种。 </span></p><p style="text-indent: 0em;white-space: normal;box-sizing: border-box;"><span style="font-size: 15px;color: rgb(113, 112, 113);box-sizing: border-box;">当然，目前我们监控项目中说的网线，主要是指双绞线。双绞线是由许多对线组成的数据传输线。特点是价格便宜，所以被广泛使用。</span></p><p style="text-indent: 0em;white-space: normal;box-sizing: border-box;"><span style="font-size: 15px;color: rgb(113, 112, 113);box-sizing: border-box;">今天，我们就来重点讲一讲双绞线~</span></p></section></section></section><section style="margin: 10px 0%;text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: middle;width: auto;background-color: rgba(255, 255, 255, 0);line-height: 0;box-sizing: border-box;"><section style="opacity: 0.85;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 17px;height: 17px;vertical-align: top;overflow: hidden;background-color: rgb(65, 155, 139);box-sizing: border-box;"><br></section></section><section style="opacity: 0.6;margin-top: -8px;margin-right: 0%;margin-left: 0%;transform: translate3d(6px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 12px;height: 12px;vertical-align: top;overflow: hidden;background-color: rgb(65, 155, 139);box-sizing: border-box;"><br></section></section></section><section style="display: inline-block;vertical-align: middle;width: auto;background-color: rgba(255, 255, 255, 0);line-height: 0;letter-spacing: 0px;padding-right: 10px;padding-left: 10px;box-sizing: border-box;"><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;vertical-align: top;border-width: 0px;border-radius: 0px;border-style: none;border-color: rgb(62, 62, 62);line-height: 1;letter-spacing: 0px;box-sizing: border-box;"><section style="margin-right: 0%;margin-bottom: 4px;margin-left: 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: justify;font-size: 17px;color: rgb(65, 155, 139);letter-spacing: 2px;box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;">双绞线</strong></p></section></section><section style="margin-right: 0%;margin-left: 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(164, 198, 188);height: 1px;box-sizing: border-box;"><br></section></section><section style="opacity: 0.28;box-sizing: border-box;" powered-by="xiumi.us"><section style="color: rgb(65, 155, 139);font-size: 10px;line-height: 1.3;box-sizing: border-box;"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section></section></section><section style="display: inline-block;vertical-align: middle;width: auto;background-color: rgba(255, 255, 255, 0);line-height: 0;box-sizing: border-box;"><section style="opacity: 0.85;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 17px;height: 17px;vertical-align: top;overflow: hidden;background-color: rgb(65, 155, 139);box-sizing: border-box;"><br></section></section><section style="opacity: 0.6;margin-top: -8px;margin-right: 0%;margin-left: 0%;transform: translate3d(-6px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 12px;height: 12px;vertical-align: top;overflow: hidden;background-color: rgb(65, 155, 139);box-sizing: border-box;"><br></section></section></section></section><section style="margin: 10px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;vertical-align: top;box-sizing: border-box;"><section style="margin: -20px 0% 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;border-width: 2px;border-style: solid;border-color: rgb(255, 255, 255);padding: 10px;box-sizing: border-box;"><section style="margin-top: 10px;margin-bottom: 10px;text-align: left;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;box-sizing: border-box;"><section style="display: inline-block;vertical-align: middle;width: 1.5em;height: 1.5em;border-radius: 50%;background-color: rgb(249, 110, 87);box-sizing: border-box;"><br></section><section style="display: inline-block;vertical-align: middle;margin-left: -0.8em;width: 0px;border-right: 1em solid rgb(255, 255, 255);border-top: 0.6em solid transparent !important;border-bottom: 0.6em solid transparent !important;box-sizing: border-box;"><br></section></section><section style="display: inline-block;vertical-align: middle;color: rgb(180, 160, 67);box-sizing: border-box;"><p style="box-sizing: border-box;">什么是双绞线</p></section></section><section style="text-align: center;margin: 10px 0% 20px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 97%;vertical-align: top;box-shadow: rgb(140, 140, 140) 0px 0px 3px;box-sizing: border-box;"><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;vertical-align: top;padding-top: 15px;padding-right: 15px;padding-left: 15px;box-sizing: border-box;"><section style="margin-right: 0%;margin-left: 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: left;font-size: 15px;line-height: 1.9;letter-spacing: 1.2px;color: rgb(113, 112, 113);box-sizing: border-box;"><p style="text-indent: 0em;box-sizing: border-box;">双绞线采用了一对互相绝缘的金属导线对绞的方式，来抵御频率小于25MHz以下电磁波干扰。</p><p style="text-indent: 0em;box-sizing: border-box;">把两根绝缘的铜导线按一定密度互相绞在一起，可以降低信号干扰的程度，每一根导线在传输中辐射的电波会被另一根线上发出的电波抵消。</p><p style="text-indent: 0em;box-sizing: border-box;">一般来说，<span style="color: rgb(65, 155, 139);box-sizing: border-box;">线绞的越密，其抗干扰能力就越强。</span>“双绞线”的名字也是由此而来。</p></section></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="text-align: justify;font-size: 15px;line-height: 1.9;letter-spacing: 1.2px;color: rgb(113, 112, 113);box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;">现在的通用的屏蔽类型按照如下分类：</strong></p><p style="white-space: normal;box-sizing: border-box;"><span style="color: rgb(65, 155, 139);box-sizing: border-box;">⚫ </span>U/UTP双绞线：即通常所说的UTP双绞线，非屏蔽双绞线；</p><p style="white-space: normal;box-sizing: border-box;"><span style="color: rgb(65, 155, 139);box-sizing: border-box;">⚫ </span>F/UTP双绞线：总屏蔽层为铝箔屏蔽，没有线对屏蔽层的屏蔽双绞线；</p><p style="white-space: normal;box-sizing: border-box;"><span style="color: rgb(65, 155, 139);box-sizing: border-box;">⚫</span> U/FTP双绞线：没有总屏蔽层，线对屏蔽为铝箔屏蔽的屏蔽双绞线；</p><p style="white-space: normal;box-sizing: border-box;"><span style="color: rgb(65, 155, 139);box-sizing: border-box;">⚫</span> SF/UTP双绞线：总屏蔽层为丝网＋铝箔的双重屏蔽，线对没有屏蔽的双重屏蔽双绞线；</p><p style="white-space: normal;box-sizing: border-box;"><span style="color: rgb(65, 155, 139);box-sizing: border-box;">⚫</span> S/FTP双绞线：总屏蔽层为丝网，线对屏蔽为铝箔屏蔽的双重屏蔽双绞线</p></section></section></section><section style="margin-right: 0%;margin-bottom: -16px;margin-left: 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"></section></section></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="margin-top: 10px;margin-bottom: 10px;text-align: left;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;box-sizing: border-box;"><section style="display: inline-block;vertical-align: middle;width: 1.5em;height: 1.5em;border-radius: 50%;background-color: rgb(249, 110, 87);box-sizing: border-box;"><br></section><section style="display: inline-block;vertical-align: middle;margin-left: -0.8em;width: 0px;border-right: 1em solid rgb(255, 255, 255);border-top: 0.6em solid transparent !important;border-bottom: 0.6em solid transparent !important;box-sizing: border-box;"><br></section></section><section style="display: inline-block;vertical-align: middle;color: rgb(180, 160, 67);box-sizing: border-box;"><p style="box-sizing: border-box;">双绞线的分类</p></section></section><section style="text-align: center;margin: 10px 0% 20px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 97%;vertical-align: top;box-shadow: rgb(140, 140, 140) 0px 0px 3px;box-sizing: border-box;"><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;vertical-align: top;padding-top: 15px;padding-right: 15px;padding-left: 15px;box-sizing: border-box;"><section style="margin-right: 0%;margin-left: 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: left;line-height: 1.9;font-size: 15px;letter-spacing: 1.2px;color: rgb(113, 112, 113);box-sizing: border-box;"><p style="text-indent: 0em;box-sizing: border-box;">双绞线其实也有很多不同的类型，根据ISO/IEC 11801标准分类。</p><p style="text-indent: 0em;box-sizing: border-box;">常见的有：<span style="color: rgb(65, 155, 139);box-sizing: border-box;">五类线、超五类线、六类线、七类线、超七类线</span><span style="box-sizing: border-box;">。</span></p><p style="text-indent: 0em;box-sizing: border-box;">前者线径较细而后者线径较粗。一类线、二类线、三类线、四类线已被标准淘汰，在这里就不多说了哟~</p></section></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="text-align: left;font-size: 14px;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;" powered-by="xiumi.us"><p style="text-indent: 0em;box-sizing: border-box;"><span style="font-size: 15px;color: rgb(113, 112, 113);box-sizing: border-box;">五类线、超五类线、六类线的传输速率在百兆到千兆之间，能够满足我们大部分监控项目的需求，因此广泛应用于各种监控项目中（目前五类线也已逐步被超五类线代）。<br style="box-sizing: border-box;"></span></p><p style="text-indent: 0em;box-sizing: border-box;"><br></p><p style="text-indent: 0em;box-sizing: border-box;"><span style="font-size: 15px;letter-spacing: 1.2px;color: rgb(113, 112, 113);box-sizing: border-box;">而超六类及以上的网线，虽然性能更好，但是价格也相对高不少，其性价比不符合监控项目的需求，所以监控类项目中，很少使用这些网线。</span></p></section></section></section><section style="margin-right: 0%;margin-bottom: -16px;margin-left: 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"></section></section></section></section></section></section><section style="margin: 10px 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;vertical-align: top;box-sizing: border-box;"><section style="margin: 10px 0%;text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: middle;width: auto;background-color: rgba(255, 255, 255, 0);line-height: 0;box-sizing: border-box;"><section style="opacity: 0.85;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 17px;height: 17px;vertical-align: top;overflow: hidden;background-color: rgb(65, 155, 139);box-sizing: border-box;"><br></section></section><section style="opacity: 0.6;margin-top: -8px;margin-right: 0%;margin-left: 0%;transform: translate3d(6px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 12px;height: 12px;vertical-align: top;overflow: hidden;background-color: rgb(65, 155, 139);box-sizing: border-box;"><br></section></section></section><section style="display: inline-block;vertical-align: middle;width: auto;background-color: rgba(255, 255, 255, 0);line-height: 0;letter-spacing: 0px;padding-right: 10px;padding-left: 10px;box-sizing: border-box;"><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;vertical-align: top;border-width: 0px;border-radius: 0px;border-style: none;border-color: rgb(62, 62, 62);line-height: 1;letter-spacing: 0px;box-sizing: border-box;"><section style="margin-right: 0%;margin-bottom: 4px;margin-left: 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="text-align: justify;font-size: 18px;color: rgb(65, 155, 139);letter-spacing: 2px;box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="font-size: 17px;box-sizing: border-box;">质量鉴别</span></strong></p></section></section><section style="margin-right: 0%;margin-left: 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(164, 198, 188);height: 1px;box-sizing: border-box;"><br></section></section><section style="opacity: 0.28;box-sizing: border-box;" powered-by="xiumi.us"><section style="color: rgb(65, 155, 139);font-size: 10px;line-height: 1.3;box-sizing: border-box;"><p style="box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section></section></section></section></section><section style="display: inline-block;vertical-align: middle;width: auto;background-color: rgba(255, 255, 255, 0);line-height: 0;box-sizing: border-box;"><section style="opacity: 0.85;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 17px;height: 17px;vertical-align: top;overflow: hidden;background-color: rgb(65, 155, 139);box-sizing: border-box;"><br></section></section><section style="opacity: 0.6;margin-top: -8px;margin-right: 0%;margin-left: 0%;transform: translate3d(-6px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 12px;height: 12px;vertical-align: top;overflow: hidden;background-color: rgb(65, 155, 139);box-sizing: border-box;"><br></section></section></section></section></section></section><section style="margin: -20px 0% 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;border-width: 1px;border-style: solid;border-color: transparent;padding: 10px;box-sizing: border-box;"><section style="font-size: 15px;line-height: 1.9;letter-spacing: 1.2px;color: rgb(113, 112, 113);box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><span style="letter-spacing: 1.2px;color: rgb(65, 155, 139);box-sizing: border-box;">☞ <span style="letter-spacing: 1.2px;color: rgb(113, 112, 113);box-sizing: border-box;">产品符合RoHS 2.0标准，也就是符合十项物质的管控的网线，质量有保障。</span></span></p><p style="white-space: normal;box-sizing: border-box;"><span style="color: rgb(65, 155, 139);box-sizing: border-box;">☞</span><span style="color: rgb(249, 110, 87);box-sizing: border-box;"> </span>真线内部的铜芯用料较纯，比较软、有韧性而且不易被拉断。</p><p style="white-space: normal;box-sizing: border-box;"><span style="color: rgb(65, 155, 139);box-sizing: border-box;">☞</span><span style="color: rgb(249, 110, 87);box-sizing: border-box;"> </span>网线里的线在对绕时圈数是不一样的，因为圈数一样的话两对线之间的传输信号会互相干扰，使传输距离变短。</p><p style="white-space: normal;box-sizing: border-box;"><span style="color: rgb(65, 155, 139);box-sizing: border-box;">☞</span><span style="color: rgb(249, 110, 87);box-sizing: border-box;"> </span>网线标准长度1000英尺/箱（大约相当于305米）。</p><p style="white-space: normal;box-sizing: border-box;"><span style="color: rgb(65, 155, 139);box-sizing: border-box;">☞</span><span style="color: rgb(249, 110, 87);box-sizing: border-box;"> </span>使用磁铁可以鉴别铁芯线，如果网线用磁铁可以吸引（哪怕是轻微的吸引），那说明是铁芯线，铁芯线因为电阻大，严重影响传输效率和传输距离，不推荐购买。优质的网线一般都是使用铜作为线芯的。</p></section></section></section><section style="text-align: center;line-height: 1.9;letter-spacing: 1.2px;box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;"><br></p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="white-space: normal;box-sizing: border-box;text-align: center;line-height: 2em;"><span style="font-size: 15px;color: rgb(73, 73, 73);">看完本篇文章<br></span></section><section style="white-space: normal;box-sizing: border-box;text-align: center;line-height: 2em;"><span style="font-size: 15px;color: rgb(73, 73, 73);">你知道如何选择网线了吗？</span></section><p style="white-space: normal;box-sizing: border-box;"><br></p><p style="white-space: normal;box-sizing: border-box;"></p><p style="white-space: normal;box-sizing: border-box;"><br></p></section></section></section></section><section style="box-sizing: border-box;font-size: 16px;"><section style="margin-top: 10px;margin-bottom: 10px;text-align: right;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: middle;box-sizing: border-box;"><section style="display: inline-block;vertical-align: bottom;padding-left: 5px;padding-right: 5px;line-height: 1;margin-bottom: 2px;color: rgb(56, 56, 56);font-size: 14px;box-sizing: border-box;"><p style="box-sizing: border-box;"><strong style="box-sizing: border-box;">更多产品知识，你<span style="background-color: rgb(171, 224, 225);padding: 1px 3px;margin-right: 3px;margin-left: 3px;border-radius: 2px;box-sizing: border-box;">“在看”</span>吗？</strong></p></section><section style="max-width: 100%;display: inline-block;vertical-align: bottom;line-height: 0;width: 10%;box-sizing: border-box;"></section></section></section></section>
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