concentrated activated sludge

英 美
  • 浓缩的活性污泥
  • activated adj.激活的动词activate的过去式和过去分词.
  • concentrated adj.全神贯注的;浓缩的;密集的动词concentrate的过去式和过去分词.
  • sludge n.泥泞;淤泥;泥状雪