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有效工作 yǒuxiào gōngzuò
tech. available work; effective work; useful work
有效工作
: 49 phrases in 21 subjects
Agriculture1
Automobiles4
Aviation8
Bridge construction1
Business3
Chemistry2
Commerce3
Drilling1
Economy1
Electronics2
Finances1
General1
Metallurgy1
Name of organization1
Oil / petroleum1
Plastics1
Space5
Technology7
Telecommunications1
Textile industry2
Wind Energy2