■ noun a tank or pond containing a layer of sand or gravel, used for filtering large quantities of liquid.
FILTER BED
Meaning of FILTER BED in English
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004
■ noun a tank or pond containing a layer of sand or gravel, used for filtering large quantities of liquid.
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004