returned sludge

英 美
  • 回流污泥
  • returned adj.归还的;归来的动词return的过去式和过去分词.
  • sludge n.泥泞;淤泥;泥状雪
    1. The application of alternate ultrasonic flowrate meter for returning activated sludge measurement has been presented in this paper.
      本文介绍了采用超声波流量计测量回流污泥量的有关情况。