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控制环境
biotechn.	controlled environment

控制环境: 171 phrases in 25 subjects

Agriculture	5
Air defense	2
Animal husbandry	2
Architecture	3
Automobiles	3
Aviation	37
Business	1
Earth sciences	21
Ecology	5
Electronics	14
Environment	9
General	3
Genetics	1
Hydroelectric power stations	1
Information technology	1
Metallurgy	3
Name of organization	1
Nautical	2
Refrigeration	4
Space	26
Technology	20
United Nations	4
United States	1
Water resources	1
Wind Energy	1