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to phrases
start signal
avia. 启动信号
commun., railw. 发车信号
el. 起动信号; 起始〔启动〕信号
IT 起始[启动、初启]信号
mil., air.def. 启动起始信号
oil 起始信号
space 起始[启动]信号
telecom. 起信号
start signal: 24 phrases in 10 subjects
Air defense2
Archery1
Automobiles1
Communications3
Electronics3
Figure skating1
Geophysics1
Space3
Technology6
Telecommunications3