Air filter to smaller screen and through the dust grain and oil droplets, so as to achieve the purpose of purifying.

气流最后通过过滤网滤去较小尘粒和油滴，从而达到净化的目的。

youdao

All the subjects had to breathe deeply through a purifying filter for 5 minutes.

所有的受试人员都要通过一个净化过滤器进行呼吸5分钟。

youdao

Through further technique optimizing, the purifying effect can be improved continually and the Mc-Si ingot with whole purity of 5n can be prepared.

通过进一步工艺优化，可以继续提高提纯效果，制备整体纯度在5n以上的太阳能级多晶硅铸锭。

youdao

In this case, the fuse prevents water from passing through once its purifying capacity of 3, 000 liters of water is exhausted.

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