return-air duct
常见例句
- Return air duct section. Single- or double-line ducts can be specified.
回风管道部分。可以指定单线管道或双线管道。 - 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。
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