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喷射-由引擎发动的旋喷

25 bytes removed, 09:12, 19 October 2015
鸣谢
===鸣谢===
* [http://www.lboro.ac.uk/well/resources/technical-briefs/43-simple-drilling-methods.pdf 43. Simple drilling methods|简易钻井方法.] WEDC.
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