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信号频率 | |||
English thesaurus | |||
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SF |
signal frequency : 140 phrases in 13 subjects |
Air defense | 26 |
Aviation | 8 |
Communications | 4 |
Computer networks | 2 |
Earth sciences | 2 |
Electronics | 17 |
Geophysics | 2 |
Oil / petroleum | 4 |
Project management | 2 |
Rail transport | 4 |
Space | 13 |
Technology | 48 |
Telecommunications | 8 |