Underswing
负脉冲(信号)(瞬态特性), 负尖峰(信号)
🗣️ 情景例句
Don't stand on ceremony, make yourself at home.
别客气，随便吃。
We can't stand the summer weather.
我们不能忍受夏天的天气。
Is my car ready yet?
我的汽车修好了吗？