bedding sand

英 美
  • 垫层砂
  • bedding n.寝具(人或动物)
  • sand n.沙;沙子;沙滩;黄灰色vt.撒沙;打磨;以沙掩盖
    1. The conclusion is that the high-pressure gunite technique applied to 30 m thick of sand and gravel layer is feasible.
      通过本次经验为在深厚层砂卵砾石层中进行高喷灌浆施工提供借鉴。