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单词	Sprengel pump
释义	Sprengel pump noun : an air pump in which exhaustion is produced by drops of mercury running down a narrow tube and trapping bubbles of gas between them Word History Etymology after Herman J. P. Sprengel
随便看	Auriol auripari auriparuses auriparusses auriphrygiate auriscope auriscopes aurists auro- Aurobindo aurochs aurochses aurocyanide aurora aurora aus aurora australis aurora borealis aurora glory aurora polaris aurora yellow aurorae aurorae polares auroral auroral line auroras

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