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21. | secondary teachers schoo |
| 中等师范学校 中等师范学校 |
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22. | multiple generator |
| 倍数发生器 |
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23. | division indicator |
| 刻度倍数指示器 |
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24. | Code for design of high and medium expansion foam fire extinguishing systems |
| 高倍数、中倍数泡沫灭火系统设计规范 |
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25. | scalar multiple |
| 纯量倍数 |
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26. | voltage amplification factor |
| 电压放大倍数 |
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27. | ploidy breeding |
| 倍数性育种 |
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28. | Simpson's Multiplier |
| 辛氏倍数 |
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29. | Number of times interest earned |
| 已获利息倍数 |
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30. | time magnification |
| 时间放大倍数 |
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