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variable frequency

geophys. 可变频率
tech. 变频
variable frequency
: 127 phrases in 29 subjects
Agriculture2
Air defense10
Automobiles2
Aviation9
Bridge construction1
Communications1
Compressors2
Construction1
Earth sciences3
Electric machinery8
Electricity4
Electronics23
General3
Geophysics5
Hydroelectric power stations4
Information technology1
Mechanics3
Metallurgy2
Multimedia1
Nuclear and fusion power1
Oil / petroleum1
Radio2
Rail transport3
Refrigeration1
Space3
Statistics1
Steel production2
Technology24
Wind Energy4

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