block signal

短语词组

短语

• block synchronizing signal 块同步信号
• block k signal machine 闭塞信号机
• block received signal 数据块收到信号;码组收到信号
• BSS Block Synchronizing Signal 块同步信号
• Block Acknowledge signal 闭塞证实信号
• block control signal 块控制信号
• block for signal flag 旗索滑车
• BRS Block Received Signal 数据块收到信号
• block bell signal 闭塞铃信号
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