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| 比值〔例〕检波器 | |||
| 比例检测器 | |||
| 比例鉴频器 | |||
| 比例检波器 | |||
| 比值检波器 | |||
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ratio detector : 3 phrases in 2 subjects |
| Geophysics | 1 |
| Technology | 2 |
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