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operation-support
 operation support
securit. 经营后援; 经营支援
| system
 system
gen.
IMF. 安排
met. ; 装置
tech. 制度; 体系; 系统; 方法

to phrases
operation support
securit. 经营后援; 经营支援
operation-support: 37 phrases in 10 subjects
Air defense5
Aviation10
Communications1
Electronics3
Information technology4
Rail transport2
Space7
Technology1
Telecommunications3
United Nations1