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to phrases
frequency and time
geophys.
频率与时间
frequency and time:
53 phrases
in 14 subjects
Agriculture
1
Air defense
2
Artificial intelligence
1
Aviation
5
Business
2
Compressors
1
Earth sciences
3
Electronics
16
Geophysics
3
Hydroelectric power stations
1
Oil / petroleum
1
Space
5
Technology
9
Telecommunications
3
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