砂砾

• Rapid sand filter
  快速砂砾过滤器
• And prepare for the day when san francisco has a gritty new suburb : los angeles
  有朝一日，洛杉矶将成为旧金山布满砂砾的新郊区。
• The prospector panned out bits of sand and gravel scooped from the bed of a stream
  探矿者淘选从河床里挖出的少量含金泥沙和砂砾。
• Application of the combined pile - anchor supporting in reinforcement of high sandy gravel slope
  桩锚联合支护在砂砾石高边坡加固中的应用
• The characteristic of shehejie group of tertiary gritstone fan body in wangzhuang area of dongying depession
  3段扇三角洲砂砾岩体沉积特征分析
• Study on membrane penetration in sandy soil specimens based on digital image measurement system
  基于数字图像测量系统的砂砾土试样膜嵌入问题研究
• An underground bed or layer of earth , gravel , or porous stone that yields water
  地下蓄水层，砂石含水层含有水的泥、砂砾或多孔石的地下河床或地层
• People would pick up handfuls of gravel from the bottom of the streams and sort out the diamonds
  人们常常从河底拣起一把一把的砂砾，并挑选出钻石。
• Cement stability gravel try on pieces of shaping method to limited influence on compression strength
  水泥稳定砂砾试件成型方法对无侧限抗压强度的影响
• Then he said , “ really ? ” he reached under the table and pulled out a bucket of gravel
  然后，专家问： “真的吗？ ”他把手伸到桌子下面，拿出一桶砂砾。