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| 91. | low-frequency telecommunication cable |
| 低频通信电缆 |
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| 92. | three phase low frequency |
| 三相低频焊机 |
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| 93. | bass compensation |
| 低频音补偿 |
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| 94. | super-low frequency voltmeter |
| 超低频电压表 |
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| 95. | low frequency decrease load |
| 低频减载 |
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| 96. | low-frequency high-voltage test |
| 低频高压试验 |
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| 97. | sky wave propagation for low frequency |
| 低频天波传播 |
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| 98. | ultra-low frequency phase shifter |
| 超低频移相器 |
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| 99. | low-frequency amplification stage |
| 低频放大级 |
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| 100. | ultra low frequency radiowaves |
| 超低频无线电波 |
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