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31. | current ampliication factor |
| 电流放大倍数 |
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32. | Simpson's Multiplier |
| 辛氏倍数 |
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33. | medium-power objective |
| 中等倍数物镜 |
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34. | extinguisher with high expansion of foam |
| 高倍数泡沫灭火器 |
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35. | scalar multiple |
| 纯量倍数 |
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36. | high expansion foam |
| 高倍数泡沫 |
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37. | time magnification |
| 时间放大倍数 |
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38. | high-expansion foam generator |
| 高倍数泡沫发生器 |
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39. | decimal multiple |
| 十进倍数 |
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40. | low expansion foam |
| 低倍数泡沫 |
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