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to phrases
command signal
avia.
控制信号
hydroel.st.
给定
指令
信号
space
指令信号
;
指挥信号
tech.
命令信号
command signal:
21 phrases
in 10 subjects
Air defense
2
Automobiles
1
Aviation
1
Electric machinery
1
Electronics
7
Hydroelectric power stations
2
Space
3
Sports
1
Technology
2
Telecommunications
1
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