- 更多网络解释与电报闭塞相关的网络解释 [注:此内容来源于网络,仅供参考]
-
telegraph or telephone block system:通信闭塞制
通信闭塞制 telegraph or telephone block system | 电报联络线 telegraph orderwire | 收报机 telegraph receiver
telegraph or telephone block system:通信闭塞制
通信闭塞制 telegraph or telephone block system | 电报联络线 telegraph orderwire | 收报机 telegraph receiver