Seda
abbr. scanning electron diffraction attachment 扫描电子衍射装置
🗣️ 情景例句
They're in my office.
在我办公室。
The cheque will be cleared in about three days.
大概在3天后，支票就可以兑现了。
and in the course of a few hundred miles reaches the true ocean floor at 2,500-3,500 fathoms.
一直延伸到几百英里远深达2，500至3，500的地方，