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正交相
space
quarter-phase
正交相:
53 phrases
in 15 subjects
Air defense
4
Architecture
1
Artificial intelligence
1
Aviation
1
Construction
1
Electric machinery
2
Electronics
14
General
2
Geophysics
2
Information technology
2
Multimedia
1
Oil / petroleum
1
Space
8
Technology
11
Telecommunications
2
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