砾石

• Drilling technology for thicker conglomerate in the well ta
  塔1井巨厚砾石层钻井技术
• An unconsolidated mixture of rock fragments or pebbles
  砾石岩石碎片或卵石的松散的混合物
• We bumped up and down along the gravel path
  我们沿砾石小路颠簸而行。
• The car bumped on the uneven surface of the gravel road
  汽车在高低不平的砾石路面上颠簸着。
• Pot gravel compaction ficompaction filter unit
  双罐砾石充填过滤装置
• Boring technology for pile foundation with deep gravel layer
  高速公路深厚卵砾石层桩基成孔技术
• Tar is a binder for gravel in paving
  在铺路时柏油用来粘结砾石。
• Ballast or pebble pitch forks 9 teeth
  道碴和砾石的叉子九个齿
• Recommended practice for gravel pack of sand control of the naked hole
  裸眼井砾石充填防砂推荐作法
• Finally , an aviation battalion spread gravel for the road surface
  最后，一个航空营给路面铺砾石。