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| 恒压恒频的租源; 恒压及恒频电源 | |||
| 恒压和恒频 | |||
| 稳压与稳频 | |||
| constant voltage and constant frequency: 5 phrases in 4 subjects |
| Business | 1 |
| Electronics | 1 |
| Geophysics | 1 |
| Telecommunications | 2 |
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