Pulse-frequency apectrum
[电] 脉冲频率
🧩 词语组成解析
pulse
[pʌls]
n. 脉搏;[无线电]（电磁波等）脉动;活力;有节奏的跳动（或拍打）;
vi. （心脏）跳动;脉动;搏动;震动;
vt. 使跳动;有节奏地驱动（机器等）;[电子学]施以脉冲;[无线电]脉冲地调节（电磁波）;
pel, puls 表”驱动,推动”
frequency
['frikwənsi]
n. 频繁性;[数][物]频率，次数;频率分布;
fr + equ =equal,even,表示“相等，平均” + enc + y [形容词后缀] → n.屡次；次数；频率
🗣️ 情景例句
Maybe she'll call back. She promised.
也许她会打电话回来。她说了。
I was in the hospital for several weeks.
我在医院里住了几个星期了。
Certainly, Lily. What's wrong?
当然可以，Lily，怎么啦？