不对称潮流转移
asymmetrical flow transferring
交流-直流变换装置
alternating continuous-current commutating machine
交流直流干电池
alternative currentdirect currentall dry
交流直流转换
alternating current to direct current
直供方式交流电气化铁道
AC electrification railway with direct power supply system
直流电容电压不平衡
DC capacitor voltage unbalance