presintered density

例句：

1. 1.The presintered density of the material is very high.
   材料的预烧结密度非常高。
2. 2.The presintered density of the material is very low.
   材料的预烧结密度非常低。
3. 3. The presintered density of the material is an important factor in its strength.
   材料预烧结密度是其强度的一个重要因素。