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。
Filter trap cleaned regularly to pvent over flow and smells.
过滤器陷阱定期打扫，以防止过度流动和气味。
Discusses the work principle and testing methods of line trap and combined filter, points out the important meaning of developing field test of line trap and combined filter.
讨论阻波器、结合滤波器的工作原理及测试方法，指出开展阻波器及结合滤波器现场测试的重要意义。
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