Pwm
abbr. 脉宽调变（Pulse-Width Modulation）
🗣️ 情景例句
Where's the campus cafeteria?
校园的食堂在哪儿？
Yes, we should try to contact more.
是的，我们应该联系多点。
The question became one of whether Man could control the disease he had invented.
现在的问题是，人类能否控制住这种人为的疾病。