欧洲妇女成人淫片aaa视频,高清无吗,成人精品免费网站,国产精品久久免费视频,在线一二区,在线中文字幕播放,偿还的影视高清在线观看

search
Hot keywords
  • 聯(lián)系我們內(nèi)容
OPPC(12 cores)
Optical Phase Conductor (OPPC) is a new type of power special optical cable that combines optical fiber units into phase lines. It has dual functions of phase lines and communication, and is mainly used for voltage levels below 110kV in suburban distribution networks and rural power grids. In medium and low voltage power grids, especially distribution lines below 35 kV, some can be installed without grounding wires, so it is impossible to install OPGW. In all power grids, only phase lines are essential. In order to meet the requirements of power monitoring or fiber optic networking, OPPC and OPGW technologies are relatively close. By adding fiber optic units in a suitable way to the traditional phase line structure, it becomes a fiber optic composite phase line.
< >
Contact us
  • Qinhuangdao Wolf Cable Co., Ltd
  • No. 4 Zhuhai Road, Shanhaiguan Economic and Technological
  • 19933636285 18833522049
  • 18833522049@139.com
Scan to follow us
宁远县| 年辖:市辖区| 元阳县| 清远市| 江达县| 阜新| 齐河县| 宾川县| 汤阴县| 翁源县| 庆阳市| 松江区| 蕉岭县| 福建省| 崇左市| 加查县| 台山市| 五华县| 九江市| 洪泽县| 霍城县| 都兰县| 瓮安县| 晋江市| 曲阳县| 陇西县| 三门峡市| 衡南县| 龙里县| 牡丹江市| 班戈县| 高州市| 东安县| 武平县| 海兴县| 英超| 五常市| 崇信县| 宜黄县| 深水埗区| 怀来县|