单词	Poncelet wheel
释义	Poncelet wheel noun : an undershot waterwheel that is suitable for falls of less than six feet Word History Etymology after Jean Victor Poncelet
随便看	helicopter helicopter parent helicoptered helicoptering helicopters helicopting helicopts helicorubin Helicteres helictereses helicteresses Helictis helictite heliculturalists helidecks heligoland Heligoland trap helilifted helilifting helilifts heling helio- heliocentric heliocentric latitude heliocentric longitude

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