淫荡无码,97精品依人久久久大香线蕉97,国产欧美精品一区二区三区四区,最近中文av字幕在线中文

common problem

Mechanical Damage Caused by Mechanical Turning of Cables

author:admintime:2019-09-22 22:11click:
        Due to the large external diameter of mechanical power cables, it is difficult to transport and lay them, and the requirement for turning radius of power cables is stricter. In the construction of power cable, if the turning angle is too large, it may cause mechanical damage inside the conductor, and the mechanical damage will be reduced by the insulation strength of the cable until the failure occurs. A cable head fault is found in the construction. When the cable head is made, the length of the three cable heads is the same, and the connection with the equipment is limited by the terrain. The middle-phase cable head grows into an arch and discharges at the root of the cable head. After that, measures should be taken to shorten the connection length of the middle-phase cable head properly so that the three-phase cable head can not be subjected to external forces. Practice has proved that the operation effect is good. It can be seen that in the process of cable construction, the torsion of the cable should be reduced as much as possible. When the cable is turning and remaining, the cable should be in natural bending and the phenomenon of internal mechanical damage should be eliminated.

Telephone

0769-85415700

function

Price

quality

service

Wechat sweep

Mobile phone sweep

亚洲综合自拍| 亚洲欧美日本韩国| www.天天干| 懂色中文一区二区在线播放| 亚洲ed2k| 女狠狠噜天天噜日日噜| 麻豆人妻交换| 亚洲国产精品三级片| 国产午夜精品理论片A级在线观看| 手机在线观看免费AV| 国产成年无码AV片在线| 亚洲日本人成网站在线播放| 欧美性啪啪视频| 国产传媒 无码专区| 欧美亚洲日韩在线一区| 欧美精品黑人粗大视频| 色哟哟免费观看| 好男人官网www在线观看| 人妻少妇播放网站| 国产呻呤在线播放| 亚洲天堂AV在线网| 在线成人色视频| 亚洲第一福利网站在线观看| 噜噜噜久久,亚洲精品国产品| 丝袜制服一区| 色戒网视频永久地址| 成人免费毛片免费在线观看 | 抓住我的双乳咬我奶头视频看| 国产av.con| 波野内射二区| 少妇高潮太爽了在线观看免费| 久久久久久无码精品人妻一区二区| 波多野结衣连续被躁57分钟| 国产老熟女精品久久久久影院黑人| 日本欧美综合在线视频 | 一卡2卡3卡4卡精品乱码视频| GOGO熟女人妇大尺度| 人妻系列无码专区久久五月天| 人妻多毛丰满熟妇av无码| 国产成人亚洲日韩欧美玉蒲团| 特级欧美午夜aa片|