短语词组短语circumrotate angle 旋转circumrotate auditoria 旋转观众席circumrotate stair 旋转楼梯circumrotate extrusion alloying 旋转挤压合金化circumrotate friction extrusion 旋转摩擦挤压circumrotate -press automatic control valve 旋压式自控阀门 返回 circumrotate