当不同的陶瓷颗粒混合使用时，其数量和直径大小应该保持一定的比值，否则将会破坏粒子间的排列方式，影响过滤效率。
When ceramic particles are mingled, the ratio of particle amount to diameter should keep constant, or the arrangement of particles will be disordered, thus decreasing the efficiency of filter.
目的评价不同类型口罩滤材对非生物颗粒气溶胶和微生物气溶胶过滤效率。
Objective To evaluate the filtration efficiency of different types of mask filtration materials against non-biological particles aerosol and microbial aerosol.
主过滤器进行连续清理，次过滤器收集细小颗粒，同时采用热泵来提升总热效率。
The primary filter for continuous cleaning, and the secondary filter for collection of fine particles. Heat pump can also be offered to increase the total thermal efficiency.
主过滤器进行连续清理，次过滤器收集细小颗粒，同时采用热泵来提升总热效率。
The primary filter for continuous cleaning, and the secondary filter for collection of fine particles. Heat pump can also be offered to increase the total thermal efficiency.
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