英和和英

名詞

hydropump (複数形 hydropumps)

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   • 1980, Water and Wastewater Treatment Plants Operator's Newsletter

     This is because of the increased pulling power of the retro jet which would make manual retraction unduly laborious. A hydropump has therefore been fitted that is simply operated by a clutch lever giving variable speed of retraction.

   • 1996, Frederick Hadleigh West, ‎Constance F. West, ‎John F. Hoffecker, American Beginnings

     Professor N. K. Vereshchagin, a palaeontologist from Leningrad who joined the expedition, discovered the archaeological component at the site when using a hydropump to expose a bone-rich horizon of the "cemetery."