当含尘空气通过过滤器时，滤料的初始阻力随滤尘增加而逐步上升。
When air containing dust passes through the filter, the initial resistance of the filter material rises along with the increase of filter dust.
如果你的房子曾经刷过含铅的油漆，并且漆层还比较好，最好的方法是用新的不含铅的油漆覆盖旧的漆层，而不是去除老的含铅的漆层，因为这样做，铅尘反而排放到空气当中了。
If your old house has lead paint in good condition, cover it with fresh paint rather than removing it, which releases lead dust into the air.
本文以理论研究为出发点，结合实验的方法，对滤纸、清洁褶状空气滤清器以及含尘褶状空气滤清器的阻力进行深入研究。
This thesis USES theoretical approach, combining experiment method, to make an in-depth study on the pressure drop of filter-paper, clean and clogging pleated air cleaner products.
在工业生产中，加热工序中产生的含尘热气由抽尘系统抽走，确保生产场所空气达标。
In industrial production, hot air containing dust is taken out by dust-removing system in heating procedure to ensure the air quality up to the standard of the produce place.
降低车间空气含尘量不仅能改善劳动条件，而且能减少产品的瑕疵。
To lower the amount of dust in the air in workshop can not only improve he condition of laboring, but also reduce the flaw on the product.
降低车间空气含尘量不仅能改善劳动条件，而且能减少产品的瑕疵。
To lower the amount of dust in the air in workshop can not only improve he condition of laboring, but also reduce the flaw on the product.
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