Dbv
[电] 和阻抗水平无关的电压增减
🗣️ 情景例句
What time should I call back?
我应该何时再打来？
Excuse me I don't know.
对不起我不知道。
Waves are the children of the struggle between ocean and atmosphere.
海浪是大海和空气相斗的产物。