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operation time
busin. 营业时间
el. 工作时间
nautic., tech. 演算时间工作时间,运行时间
oil 作业时间
tech. 运转时间; 运行时间
telecom. 运算时间; 操作时间
operation time: 113 phrases in 24 subjects
Agriculture3
Air defense2
Automobiles4
Aviation4
Business16
Commerce3
Construction2
Earth sciences1
Economy2
Electric machinery1
Electronics4
General1
Hydroelectric power stations2
Information technology7
Management6
Metallurgy9
Oil / petroleum4
Oil processing plants1
Rail transport2
Shipbuilding3
Space6
Technology28
Textile industry1
Wind Energy1