signal line
短语词组
- signaling g line circuit 信號線電路
- signaling g line 信號線
- signaling line circuit 信號線電路
- Line Signaling 線路信令
- LSE Line Signaling Equipment 線路信令設備
- analog line signaling 模擬用戶信令
- line signaling unit 線路信令單元
- Subscriber line signaling 用戶線信令
- line signaling system 線路信令系統 返回 signal line