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pulse-frequency modulation | |||
pulse frequency modulation; PFM | |||
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pulse-frequency modulation |
脉频调制 : 45 phrases in 9 subjects |
Air defense | 9 |
Aviation | 2 |
Earth sciences | 1 |
Electronics | 21 |
Geophysics | 1 |
Remote sensing | 1 |
Space | 1 |
Technology | 7 |
Telecommunications | 2 |