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| 纹波频率整流器中纹波电流的频率 | |||
| 脉动频率; 纹波频率; 波纹频率 | |||
| ripple frequency: 4 phrases in 4 subjects |
| Electric machinery | 1 |
| Electronics | 1 |
| Space | 1 |
| Technology | 1 |
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