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报时信号
oil time signal
space time tick; pip
tech. blip
滴答声报时信号
gen. tick
报时时间分段信号
auto. time tick
广播报时信号声响
gen. pip
报时〔时间〕信号
commun. time signal
报时信号: 6 phrases in 5 subjects
Aviation1
Electronics1
Explosives and Explosive Ordnance Disposal1
Oil / petroleum1
Technology2