flask with round bottom

• 圆底烧瓶

flask with round bottom的用法和样例：

例句

1. Usually it is put on a round-bottomed flask or several neck flasks.
   通常它连接一个圆底烧瓶或一些长颈瓶。
2. The reaction proceeds more smoothly if the round-bottom flask is shielded from draughts by being placed in an empty beaker.
   如果圆底烧瓶置于空烧杯中，则可屏蔽气流使反应进行平稳。