内部: interior; inside; inward; indoor; depth; viscera; bowel; internal 短语和例子内部联系 internal relations; 国家内部事务 the domestic affairs of a country; 人民内部矛盾 contradictions among the people; 事物的内部规律性 i
电压降: fall of potentialp.d. = potential droppotential fallvolt dropvoltage depressionvoltage dropvoltage-dropvolts lost
