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system ground
telecom. 系统接地
system ground: 318 phrases in 24 subjects
Agriculture3
Air defense24
Anatomy1
Aviation91
Desert science1
Earth sciences11
Ecology2
Electric machinery1
Electronics46
Energy industry1
Engineering geology1
General5
Geophysics2
Hydroelectric power stations5
Information technology3
Military3
Nautical2
Rail transport1
Refrigeration1
Space78
Technology29
Telecommunications2
United Nations2
United States3

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