coal beds

英 美
  • 煤层
  • beds n.床;基座;底层;河床;花坛;苗圃;地层v.安置;发生性关系
  • coal n.煤;木炭vt.烧成炭;供应煤vi.加煤;装煤
    1. Coal seams intermixed with iron ore.
      煤层和铁矿混杂在一起。
    2. Several coal beds are developed in backswamp deposits.
      河漫沼泽上发育多套煤层。