supper-fine grains

• 粒度

supper-fine grains的用法和样例：

例句

1. Fine grain size for the smaller contact area.
   接触面积小时用细的粒度。
2. Fractal dimensions of grains in the standard photographs are measured.
   测量了标准图谱中铁素体晶粒度图形的分形维数。