女人张开腿让男桶喷水高潮_国内精品免费一区二区2001_日韩综合在线播放_麻豆在网站1区_欧美日韩在线视频首页_天天狠天天天天透在线

sales@zmscable.com

The Basic Structure of Industrial Bus Cables

1553 0 News

The basic structure of the industrial bus cable generally has conductor, insulation layer and outer sheath, the conductor is used to conduct current, mainly divided into solid and twisted two, conductor made of aluminum, copper and so on.

medium cable

In general, the conductivity of copper is relatively much better, the utilization rate is relatively high; insulation is covered in the conductor, used to isolate the conductor, and bear the corresponding voltage to prevent leakage of current to ensure the safety of work, insulation The production of materials is also diverse, but the insulation performance must be good, or not the role of insulation;

The outer layer is the most important part of the cable that plays a protective role. The materials are mainly made of rubber, plastic and metal. The plastic is often used.

In addition to these basic structures, but also according to the demand to add some other structure, such as shielding and inner layer. The shield is in the outer and outer layers of the insulating layer, and its function is to limit the electric field from electromagnetic interference.

Tags:
INQUIRY
主站蜘蛛池模板: 97国产在线 | 扒开双腿疯狂进出爽爽爽动态图 | 久久国产一级片 | 国产人碰人摸人爱视频日日 | 99久久亚洲精品蜜臀 | 全免一级毛片 | 精品国产乱码久久久久久鸭王1 | 国产亚洲精品久久久美女18黄 | 99精品视频免费热播在线观看 | 日产精品一区二区 | 国产一卡三卡四卡无卡精品 | 国产精品久久久久久久久免费桃花 | 鲁大师在线影院免费观看 | 中文成人无码精品久久久不卡 | 亚洲午夜精品一区二区三区四区 | 国产成人精品免费视频大全 | 成年人视频在线免费观看 | 麻豆系列在线观看 | 免费看欧美一级片 | 免费日韩av | 91精品久久久久久久91蜜桃 | 铠甲勇士第一部52集全 | 成品片a免人看免费 | 无码免费午夜福利片在线 | 成全视频在线观看免费高清在线观看 | 老鸭窝男人的天堂 | 九色腾高清 | 亚洲精品二区三区 | 公车上玩弄人妻 | 成人天堂噜噜噜 | 天天干天天射天天操天天摸 | 久久精品国产一区二区三区不卡 | 无码av片在线观看免费 | 久久成人免费网 | 天天槽夜夜槽槽不停 | 97超碰国产精品无码分类 | 91看片网 | 亚洲中文字幕日韩无码 | 日韩精品一区二区大桥未久 | 国内外成人在线视频 | 夜爽8888视频在线观看 |