The results show that the increase of the milling time, the vibration frequency and the charge ratio can effectively decrease the grain size of the alloy powder.
结果表明：球磨时间延长，振动频率提高和球料比的增大可有效地降低合金粉的晶粒尺寸。
2
The grain hardness of wheat, reflecting character of endosperm texture, is one of the most important determinants of milling, baking and end-use quality.
小麦籽粒硬度是胚乳质地的反映，它是国际通用小麦分类指标之一，与磨粉品质、食品加工品质关系密切。
3
Wheat grain hardness is one of the main characteristics that determine the quality, the end-use and international trade through directly affecting both the milling and bread-making qualities.