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technical operation
busin.	技术性作业
tech.	技术作业; 技术操作

technical operation: 51 phrases in 18 subjects

Air defense	1
Aviation	6
Bridge construction	3
Business	4
Consulting	1
Earth sciences	5
Economy	2
Electronics	1
General	1
International trade	3
Management	2
Metallurgy	3
Name of organization	3
Rail transport	4
Space	1
Technology	8
Telecommunications	1
United Nations	2