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。

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Filter material: layer of fine gravel used in slope stabilization structures that allows water to escape and retains soil particles.

UNESCO: L O S S A R Y

The filter material developed by Nikolaidis and his colleagues, with funding from the Critical Technologies Program and industry, has at least a 20-year life span.

CNN: Filter cleans arsenic-tainted water

The group is supported by many of the world's largest internet companies who rely on it to filter unwanted material.

BBC: Global internet slows after 'biggest attack in history'