Frequency adjust potentiometer a frequency adjust potentiometer is used to manually bring the frequency (speed) of the incoming set to that of the bus for synchronizing purposes.
频率调整电位器频率调整电位器是用于手动调整输入机组的频率使之与母排同步。
Switch on , you may adjust the speed by the inside speed control potentiometer ;
启动开关，可通过内部速度控制电位器来调整转速；
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