protective filter

 
  • 防護濾層

protective filter的用法和樣例:

例句

  1. The chimney is no longer giving off volumes of waste gas into the atmosphere, as protective filters are being used.
    加裝了防護過濾器以後,這煙囟已不再散發成股的廢氣到大氣中去了。

protective filter的相關資料:

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