manual signal box 人工信号楼
manual signal cabin 人工信号楼
manual changeover signal [计] 人工转换信号
manual block signal system 人工闭塞信号系统
manual block signal 人工闭塞信号
Emergency manual trip signal 紧急手动遮断信号
manual changeover acknowledgement signal 人工转换证实信号
signal manual blcok 人工闭塞号志机
manual trip signal 手动跳脱信号
The last message from the pilot was a manual signal at 11pm local time, in which he said he was flying through an area of black, electrically charged clouds with violent winds and lightning.
在当地时间11pm，飞行员发出了最后的信息，这条信息是手动发出的，声称他们正在飞越一个有着暴风和闪电的带电黑云。
The first indication is that Tuesday afternoon's crash occurred after the metro system staff had switched to manual scheduling following a signal failure.
暗示星期二下午这场事故发生的第一个信号就是，地铁系统员工在信号指示失败后立刻转为手动操作。
Pulse counter with manual reset and electric output signal.
有手动复位和电气输出信号的脉冲计数器。
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