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operator control
tech.	操作员控制

Operator Control : 63 phrases in 18 subjects

Agriculture	2
Air defense	1
Automobiles	1
Aviation	2
Business	1
Chemistry	1
Computer numerical control	1
Electricity	1
Electronics	11
General	3
Information technology	10
Labor law	1
Mechanics	1
Nuclear physics	1
Oil processing plants	2
Space	2
Technology	21
Telecommunications	1