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	mavin mavins mavis mavises mavish mavourneen mavourneens mavournins mavrodaphne maw maw-bound mawali mawed mawing mawk Mawken mawkens mawkin mawkins mawkish mawkisher mawkishest mawkishlier mawkishliest mawkishly

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