Adverse current extraction element

The utility model provides an adverse current extraction element, it includes extraction tube, sets up the propeller in extraction tube, and the propeller comprises axle and blade, characterized by the blade is the sheet -like, the blade just is the spiral diposition on the surface of axle along the...

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Bibliographische Detailangaben
1. Verfasser: BAI ZHONGMING
Format: Patent
Sprache:eng
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