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研究级
libr. research level
研究级
: 105 phrases in 23 subjects
Advertising1
Agriculture3
Air defense6
Artificial intelligence1
Aviation7
Business2
Commerce1
Computer networks1
Earth sciences10
Electronics24
Engineering geology1
General5
Geology1
Information technology6
Multimedia4
Name of organization1
Nautical1
Oil / petroleum1
Space13
Technology3
Telecommunications6
United Kingdom1
United States6

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