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美国
国家标准局标准
met.
NBS standards
国家 标准 局标准:
51 phrases
in 17 subjects
Animal husbandry
1
Aviation
4
Business
2
Commerce
1
Earth sciences
2
Economy
2
Electronics
8
General
3
Information technology
2
International trade
1
Librarianship
1
Metallurgy
2
Technology
10
Telecommunications
1
Textile industry
2
United States
8
Wind Energy
1
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