短語詞組短語rolling sphere radius 滾球半徑rolling radius difference 滾動圓半徑差effective rolling radius 有效滾動半徑nominal rolling radius 名義滾動半徑dynamic rolling radius 胎的動半徑Rolling radius of driving wheel 驅(qū)動輪滾動半徑effective particle velocity rolling radius 有效滾動半徑radius of rolling circle 滾圓半徑 返回 rolling radius