单词	base circle
释义	base circle noun : the circle of an involute gear wheel from which the involute forming the outline of the tooth face is generated Word History Etymology base entry 1
随便看	Bethlehem Bethlehem sage Bethlehem's-star bethlehem's-stars Bethlehemite Bethmann-Hollweg Bethnal Green bethorned bethorning bethorns bethought bethroot beths Bethulia bethumb bethump bethumped bethumping bethumps Bethune bethwack bethylid Bethylidae betide betided

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