英语词汇filter bed怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	filter bed
释义	filter bedn.（名词） A layer of sand or gravel on the bottom of a reservoir or tank, used to filter water or sewage.滤垫：在蓄水池或大容器底部铺的一层沙或砾石，用于过滤水或污水
随便看	doorjamb doorkeeper doorknob doorman doormat doormen doornail door opener Door Peninsula doorpost door prize doors doorsill doorsill doorstep doorstop door-to-door doorway doorwoman dooryard door–to–door doo-wop doozer doozers doozie

英汉双解词典包含166908条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。