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一种具有变截面进水管道式进水流道的喷水推进泵

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First Author:wangxiaofang

Disigner of the Invention:于茜,张野,鲁业明,边超,周方明,李忠贺

Application Number:2019216220353

Authorization Date:2019-09-27

Authorization number:ZL 2019216220353

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