同义词
1)commutator type frequency converter,整流式变频机2)commutator frequency changer,整流子频率变换器，换向器式变频机3)commutator frequency converter,整流式变频器4)commutator type frequency converter,整流子式变频器5)commutator type frequency converter,整劣式变频机6)Horizontal pillow packaging machine,变频器交流电机方式
