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to phrases
主操作 zhǔcāozuò
avia. major operation
tech. main operation; master operation
主操作
: 69 phrases in 22 subjects
Agriculture1
Automobiles1
Aviation3
Business1
Computer networks1
Computers1
Electronics16
Finances1
General3
Information technology8
Nautical1
Navigation2
Oil / petroleum1
Project management1
Securities1
Shipbuilding1
Space7
Steel production1
Technology13
Telecommunications3
United Nations1
United States1