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。
This paper briefly introduces chemical filters in air-conditioning, including the knowledge of chemical filtration, indices of chemical contamination, inspecting methods and typeable chemical filters.
本文介绍应用于系统的化学过滤器，包括化学过滤一般知识，控制室内环境化学污染的相关指标，现场检测方法和典型过滤器产品。
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