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	pine mahogany pine marten pine moth pine mouse pine needle pine needle gall pine needle scale pine nut pine oil pine pandora moth pine pest pine reproduction weevil pine root-collar weevil pine sawfly pine sawyer pine shoot moth pine siskin pine snake pine snakes pine spittlebug pine squirrel pine straw pine sugar pine swift pine tag

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