blown sands造句

• Threshold theory for mixed wind - blown sand
  沙漠风蚀中不均匀沙的起动研究
• Primary study on the blown sand - dust of farmland and its control in beijing region
  北京郊区农地起沙起尘与防治的初步研究
• Effect of thermal diffusion and electrostatic force on the evolution of wind - blown sand flow
  热扩散和电场对风沙流发展过程的影响
• Simulation on abated effect of nylon net with different porosities on wind - blown sand in wind tunnel
  不同孔隙度尼龙网对风沙流减弱作用的风洞模拟
• Their feet are lightest when on a path , whether of blown sand , concrete or spirit - stuff
  无论是在流沙，混凝土还是精神世界中，他们的脚步都很轻巧。
• Compared manual with spontaneous vegetation recovery process of blown sands , the pace is quicker , the degree is higher , the transformation range is larger of every physical and chemical characters
  与风沙土人工植被恢复相比较自然植被恢复，土壤发育速度慢、强度低、程度弱，土壤质量较差，肥力水平很低。
• 4 . in the process of spontaneous vegetation recovery of blown sand soil , coarse sands ( l - 0 . 25mm ) content gradually lower , middle sands ( 0 . 25 - 0 . 05mm ) and fine sands ( 0 . 05 - 0 . 02mm ) , silt , clay content gradually higher in mechanical composition
  4 、在自然植被恢复过程中，风沙土机械组成中砂粒含量变化表现为粗砂含量的降低，中砂和细砂含量的升高，砂粒整体含量降低。