coarse air filter

基本解释

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。
A disposable non-woolen filter, and a panel type washable coarse aluminum filter are installed in the front panel of return air duct of each room, to trap powder generated, if any.
在每个房间回风管的前面板上安装有一台一次性的非毛织品过滤器，以及一台板式可洗粗铝过滤器，以捕捉收集可能产生的任何粉尘。
edctrans.com
Abstract: : According to the test of evaporative air handing units, it was consisted of an inertial coarse filter, bag type filter, the hydrophilic polymer fiber filler, double fan.
以一台蒸发冷却空气处理机组为测试对象，该机组设有惯性粗效过滤器、袋式中效过滤器、亲水性高分子纤维填料、双风机。