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to phrases
signal unit
avia.
信号单位
;
信号元
;
信号装置
space
信号单元
signal unit
:
103 phrases
in 15 subjects
Agriculture
1
Air defense
4
Automobiles
1
Aviation
23
Business
1
Earth sciences
1
Electric machinery
1
Electronics
25
General
2
Geophysics
3
Information technology
8
Military
1
Space
10
Technology
11
Telecommunications
11
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