backwashing

(backwash 的现在分词) n. (划桨引起的)反流, 激流区, 反响 [机] 逆吹

词形变化

backwashings 复数 backwashings

释义与例句

n.
  1. 1.

    A form of water treatment in which water is pumped backwards through the filter media, sometimes with intermittent use of compressed air.

词源

From back + washing.

来源：wiktionary