Periodogram
[计] 周期图
🗣️ 情景例句
Certainly, sir. I'll get a taxi for you. Are you going directly to the cinema?
好的，先生。我会帮您叫车的，您直接去电影院吗？
I'm always disappointed when I don't get any mail.
当我收不到任何邮件时，我总是很失望。
With experience, and with improved apparatus,
根据经验和改进了的仪器，