单词	pitch point
释义	pitch point noun : the point of contact of the pitch lines of two gears or of a rack and pinion when in mesh Word History Etymology pitch entry 4
随便看	operatizes operatizing operator operatorless operators operceles opercle opercled opercula opercular opercular bones operculars operculate operculated opercules operculi- operculum operculums opere citato operetta operettas operettist operettists operon operons

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