Kupfersilumin
库普弗尔硅铝明合金
🗣️ 情景例句
Yes, I took part in.
有，我参加了。
I wrote 9 books.
我写了九本书。
But instruments far more delicate than that were needed if any really serious advance was to be made.
但是，如果要取得真正重大的进展，需要有比这种装置精细得多的仪器。