AC
剑桥词典
AC noun (ELECTRICITY)
[ 不可数或单数名词:没有复数形式的名词 ]abbreviation for alternating current : electrical current that regularly changes the direction in which it flows
交流电(alternating current的缩写)
比较
DC (ELECTRICITY)
AC noun (AIR)
[ 可数名词:有复数形式的名词 or 不可数或单数名词:没有复数形式的名词 ] USabbreviation for air conditioner or air conditioning
空调机,空调系统(air conditioner或air conditioning的缩写) 返回 AC