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avia.
信号分类
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信号分选
signal
:
67 phrases
in 16 subjects
Air defense
2
Business
1
Dietology
2
Electronics
5
Information technology
1
Jewelry
2
Law
10
Oil / petroleum
1
Pediatrics
1
Public security
20
Rail transport
2
Shooting sport
8
Technology
5
Telecommunications
4
Textile industry
2
Traditional medicine
1
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