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有效效能
econ. useful efficiency
有 效效能: 113 phrases in 29 subjects
Agriculture4
Air defense1
Animal husbandry4
Architecture1
Automobiles1
Aviation5
Biology2
Business1
Chemistry1
Compressors1
Cosmetics and cosmetology2
Desert science6
Earth sciences6
Ecology3
Economy12
Electric machinery1
Explosives and Explosive Ordnance Disposal3
General4
Geophysics3
Metallurgy10
Oil / petroleum1
Plastics1
Project management2
Space6
Technology23
Telecommunications2
Textile industry1
United Nations1
Wind Energy5

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