rotary rod旋转杆rotaryadj.旋转的n.旋转式机器；环形交叉路rotary offset machine轮转胶印机rotary scoop trencher轮斗式挖沟机rotary group selector旋转式选组器rotary heat exchanger旋转式热交换器rotary drum fermentor转鼓式发酵器rotary vane type pump回旋叶片式泵rotary cutting veneer镟切单板Rotary magnetic field旋转磁场rotary feed reservoir旋转给料斗rotary central office旋转制电话局