亚洲AV成人精品一区二区三区四区|快播日韩美嘛豆一区|国产欧美激情a级免费|一级黄片AAA色一品|久久国产成人精品Av|谁有AV免费观看|成人高清国产视频|日韩区欧美区久久综合一区|在线观看黄色网页|亚洲欧美国产11

單詞乎

closed-circuit television

closed-circuit television是什么意思、closed-circuit television怎么讀

closed-circuit television漢語翻譯

【電】 閉路電視

closed-circuit television英語解釋

名詞 closed-circuit television:

  1. a television system that is not used for broadcasting but is connected by cables to designated monitors (as in a factory or theater)
0
糾錯(cuò)