A fine - grained, dark gray sedimentary rock, formed from silt and clay and similar to shale but without laminations.

 
  • 泥巖一種細粒的、深灰色的沉積巖,主要由淤泥或粘土組成,類(lèi)似頁(yè)巖但不具紋層
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan