Automatic Line Insulation Testing. Equipment located in a Central Office which sequentially tests lines in the office for battery crosses and grounds.

　
英 美
  • 自動(dòng)線(xiàn)路絕緣測試。放置在市話(huà)局的設備，對市話(huà)局的線(xiàn)路進(jìn)行線(xiàn)路交叉測試和對地測試。
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan