air-filtration paper 空气滤纸 air-knife coated paper 气刀涂布纸 air-mail paper 航空信纸 air-proof paper 不透气纸 ..
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This paper expounds the adaptibility of coarse sand filter with simultaneous air and water backwash to tertiary filtration plant.
阐述了粗石英砂气水同时冲洗滤池，在污水深度处理中的适用性。
Filtration and sterilization mechanism, manufacture technics and method, performance and application status of this new air filtration material (filter) are introduced in detail in this paper.
本文详细介绍了这种新型空调过滤材料(器)的过滤和灭菌机理、制备工艺和方法、性能及应用情况。
The key properties of oil filtration materials and air filtration materials and their test methods home and abroad were demonstrated in the paper.
阐述了国内外通油过滤材料和空气过滤材料的主要性能及其测试方法。
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