砂

• They proceeded at once to extract the interior mould, clearing out the boring of the piece .
  他们立时动手掘砂模，掏清炮筒。
• In sandy places you can often see heaps of sand forming little hills .
  在多砂的地区，你常常可以看到形成小山般的一堆堆砂土。
• It is believed that a dry sandy terrain would be particularly conductive to base surge formation .
  据信在干砂地带上特别容易形成基浪。
• After setting, the surfaces of the specimens are ground down using carborundum and alumina .
  凝固之后，样品表面连续用金钢砂或氧化铝磨平。
• The sand box model is a reduced scale representation of the natural porous medium domain .
  砂槽模型是将天然的多孔介质区域按比例缩小的模型。
• All of them have a direct bearing on both the internal structure and the shape of the sand body .
  所有这些均对砂体的内部结构和形态有直接关系。
• The components to be considered in this book include boulders, gravel, sand, silt and clay .
  本书所考虑的组成部分包括漂砾，砾石，砂，粉土和粘土。
• Magnesium deficiency most commonly occurs in acid, sandy soils in areas of moderate to high rainfall .
  缺镁常常发生在中雨量或高雨量区的酸性砂质土。
• This sandstone unit is commonly thick-bedded and massive, with silty and carbonaceous laminations .
  该砂层单元通常为厚层或块状，具粉砂质和碳质纹层。
• Tidal channels, deltas, and washover fans are characteristically associated with offshore bars .
  潮汐水道、三角洲和冲刷扇典型地与滨外砂洲伴生在一起。