ac基本解释
abbr.(=alternating current)交流电
abbr.(=actinium )元素锕
abbr.(=air-conditioning )空气调节
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基本词汇
abbr.(=alternating current)交流电
abbr.(=actinium )元素锕
abbr.(=air-conditioning )空气调节
【hao86.com好工具】
"In the US most household current is AC at 60 cycles per second"