单词	pitch circle
释义	pitch circle noun : a pitch line in a circular gear that forms a circle concentric with the axis of the gear Word History Etymology pitch entry 4
随便看	operatize operatized 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

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。