rotary nut回转螺母rotaryadj.旋转的n.旋转式机器；环形交叉路rotary contact旋转接触rotary traffic环形交通rotary mufffle回转隔焰炉rotary blender回转混合器,旋转混合机rotary slitter回转式纵切刀rotary massage滚揉rotary drillin旋转钻井rotary divider旋转式分禾器rotary current多相电流,旋转流量rotary balloon圆球形气球