... 照查锁闭 check locking 遮断信号 obstruction signal 遮断信号按钮 obstruction signal button ...
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短语
遮断信号机
obstruction signal
;
Danger signal machine
桥梁遮断信号
bridge obstruction signal
遮断信号按钮
obstruction signal button
紧急手动遮断信号
Emergency manual trip signal
遮断预告信号机
approach obstruction signal
遮断式信号
barred signal