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| frequency modulation on the pulse | |||
| pulse frequency modulation | |||
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脉冲调频 : 88 phrases in 13 subjects |
| Air defense | 30 |
| Aviation | 3 |
| Communications | 1 |
| Earth sciences | 2 |
| Electronics | 18 |
| Geophysics | 3 |
| Information technology | 2 |
| Oil / petroleum | 1 |
| Remote sensing | 1 |
| Shipbuilding | 1 |
| Space | 13 |
| Technology | 10 |
| Telecommunications | 3 |
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