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| 21. | Liu: I had a dream of becoming a fighter pilot from my childhood. |
| 刘:我小时侯曾梦想当飞行员，但是这个梦想破灭了，所以，当我听到有一本书叫《战斗机》时，我想方设法去找这本书。 |
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| 22. | The process of scalingup 150~200 times from bench test to pilot test by onestep was studied and the rules |
| 研究了该过程从小试一步放大 1 50～ 2 0 0倍到中试的规律 ,提出了在几何相似的前提下 ,摩擦力相似或粉碎功相似的准则。 |
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