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operation guide
 operation guide
el. 运行指导; 操作指导
| system
 system
gen.
IMF. 安排
met. ; 装置
tech. 制度; 体系; 系统; 方法

to phrases
operation guide
el. 运行指导; 操作指导
operation guide: 6 phrases in 4 subjects
Air defense1
General1
Metallurgy1
Technology3