只需将一个干的咖啡滤纸放在干净的滤器中，然后将滤器放在干的干净水罐或碗上即可。
Simply place a dry coffee filter in a clean drip coffee filter basket or colander, and place the basket or colander over a clean dry pitcher or bowl.
滤器常用的材料：滤纸、尼龙布、高分子材料。
Filter materials commonly used: filter paper, nylon, polymer material.
高效空气过滤器的阻力与滤纸特性、滤纸褶间距、滤纸褶深、滤纸褶形状、气流温度等有关。
HEPA filter resistance was related with filtration media, pleat distance, pleat depth, pleat shape and air flow temperature.
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