froth layer

英 美
  • 泡沫层
  • froth n.泡;泡沫;废物v.(使)生泡沫;吐沫泡;吹泡
  • layer n.层vi.分层vt.将某物堆积成层
    1. In the scum layer, these fatty materials may be rather remote from the bacteria that are capable of utilizing them.
      泡沫层中的脂肪物质离能利用脂肪的细菌相当远。