- tripper
- 发信号: give a signal
- 装置: installation; device; appara ...
- 信号装置；发信号: signalling
- 信号装置: advertiser; advertizer; alarm; annunciator; indexing device; semaphore; signal apparatus; signal device; signal fixture; signal installation; signaldevice; signaling device; signaling installation; signaling set; signalling apparatus; signalling device; signallingdevice; telltale
- 信号装置，信号器: advertiser
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