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怎么把空气装进瓶子啊
更新时间: 2020-09-22 00:00:00  

可以用液体排空法收集空气,具体方法步骤如下:

1、先把瓶子中装满液体;

2、排除瓶内原有的气体;

3、然后在正常大气环境中将瓶中的液体倒出;

4、空气就会进入瓶中,将瓶子拧上盖,收集完毕。

关键词: 怎么 空气 瓶子

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