单转子 meaning in English

single rotor
single-spool rotor

Chain mills are available with one or two rotors
链式粉碎机配备有单转子或双转子。
Single rotor impact crusher
单转子反击式破碎机
The compatibility of software system is very good . it can balance any correction plane of one rotor or two rotors rotary machanic , moreover , the number of correnction planes may less than the number of spots of measure vibration
软件的通用性很好，可以对单转子或双转子旋转机械动平衡，旋转机械的校正面个数毫无限制，甚至，转子的校正面个数可以小于测振点的数目。