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外标准
avia.
external standard
外 标准:
48 phrases
in 18 subjects
Air defense
1
Aviation
5
Business
4
Ecology
1
Economy
1
Electronics
7
Finances
2
Forestry
1
General
1
Geography
1
International trade
1
Logistics
1
Nautical
1
Oil / petroleum
1
Radio
1
Securities
1
Space
5
Technology
13
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