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to phrases
频率比
eng.geol. frequency ratio
频率数比
auto. frequency ratio
频率比
: 45 phrases in 16 subjects
Air defense3
Artificial intelligence1
Aviation1
Business2
Construction1
Electric machinery1
Electronics12
General1
Geophysics4
Multimedia1
Oil / petroleum4
Semiconductors1
Shipbuilding1
Space5
Statistics3
Technology4

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