砂砾

• Porous seepage in calcirudite rock with 3 - d stresses
  三维应力作用下砂砾岩孔隙型渗流
• Layered gravel and charcoal to make a filter
  将砂砾和木炭分层以做成过滤器
• Analysis on geophysical characteristics of glutenite reservoir
  砂砾岩油藏的地球物理特征
• Sands and gravels for well construction - requirements and testing
  水井建造用砂和砂砾.要求和检验
• Study on ultimate bearing capacity of soft sandy gravel rock foundation
  砂砾软岩的极限承载力分析
• I ' ve got a bit of grit in my shoe
  我的鞋子里弄到了一些砂砾。
• I ' ve got a piece of grit in my eye
  有一颗砂砾在我的眼睛里。
• On the properties and thickness of cement stabilized sand gravel materials
  水泥稳定砂砾材料特性及厚度的研究
• There must be some grit in the machinery ; it isn ' t running smoothly
  机器里一定有一些砂砾，它运转得不太滑顺。
• Grit is spread on roads to make them less slippery in icy weather
  在结冰的天气，在路上撒上砂砾心免路面太滑。