Seda
abbr. scanning electron diffraction attachment 扫描电子衍射装置
🗣️ 情景例句
At 4, but I have to leave by 3:00 to get there on time.
四点，不过我三点必须离开，才能准时到那里。
It's a hard job, but I hope he can make it.
这不是件容易的差事，但我希望他能做到。
It was a good suggestion.thanks.
你建议得不错，谢谢。