1.We bought these items at an auction.

1.这些物件是我们一次拍卖。

2.B-in the laboratory was excessive.

2.实验室里损坏物件过。

3.Inserts at the lower cone bottom , filter out iron mixed with raw materials , optional madel available.

3.放入锥斗底部，过滤掉原料中铁质物件。有种结构形式以供选择。