In this paper,the design of curve of grooved drum is researched,which deduced two types of circular cone curves analytic formula of grooved drum.是什么意思_In this paper,the design of curve of grooved drum is researched,which deduced two types of circular cone curves analytic formula of grooved drum.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句