过滤膜，膜滤器

聚四氟乙烯覆膜滤料是一种多微孔、极其光滑、又憎水的聚四氟乙烯过滤膜与不同基材(如针刺毡或编织物)复合而成的过滤材料。

filter press

self-cleaning filter

filter capacitor

filter board【化工】;sieve-plate【化工】

filter cleaner

arterial line filter

plutonium-in-air filter paper monitor

Wiener filter