The dune sands are very well sorted and rounded pure quartz sand(>95%) with single mode grain distribution and without suspension materials.

沙丘砂由分选、磨圆好的石英砂组成，含量大于95%，具单众数粒度分布，无悬移质。

youdao

And sand can in workpiece surface junction with small rounded corners, make artifacts appear more beautiful, more precise.

并且喷砂能在工件表面交界处打出很小的圆角，使工件显得更加美观、更加精密。

youdao

And sand can in workpiece surface junction with small rounded corners, make artifacts appear more beautiful, more precise.

并且喷砂能在工件表面交界处打出很小的圆角，使工件显得更加美观、更加精密。

youdao