A subterranean flow of briny water could rearrange sand grains or alter surface roughness in a way that darkens its appearance.
地下水流的流动会使得沙粒积累，并使得表面变得粗糙，从而颜色更深。
By setting up mechanical sand barriers on degenerated Haloxylon ammodendron woodland, the roughness of woodland increased; the wind speed an.
布设机械沙障可使退化梭梭林地表粗糙度增大，林内近地面层风速、输沙量显著下降。
When using in moulding sand, it can promote oriental solidification of castings and prevent burn-on and sand inclusion of castings, and improve roughness of castings.
在铸造生产中可以促进铸件的方向性凝固，防止粘砂、夹砂等铸造缺陷和改善铸件表面粗糙度。
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