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system switching
el.mach. 系统切换
space 系统转换
tech. 线路转换
system switching
: 253 phrases in 23 subjects
Agriculture2
Air defense7
Automatic control3
Automobiles5
Aviation17
Business8
Communications2
Computer networks1
Earth sciences3
Electronics78
Exhibitions1
General3
Geophysics2
Hydroelectric power stations1
Information technology17
Metallurgy2
Oil / petroleum2
Rail transport5
Securities2
Space17
Technology43
Telecommunications31
Wind Energy1