closed circuit signaling是什麼意思、英文翻譯及中文解釋 本文已影響 1.07K人 closed circuit signaling 詞語: closed circuit signaling解釋: 閉路信號詞典: 電信專業英漢詞典 closed circuit signaling 相關解釋 閉路信號 〔名詞〕closed circuit signaling