apparent powder density

例句：

1. 1. The engineer measured the apparent powder density of the material to determine its strength.
   工程师测量了材料的可见粉末密度，以确定其强度。
2. 2.The study found that the apparent powder density of the soil was higher than expected.
   研究发现土壤的可见粉末密度高于预期。
3. 3. The manufacturer claims that their product has an apparent powder density of 0.8 g/cm³, which is significantly lower than other brands.
   制造商声称他们的产品具有0.8 g/cm³的可见粉末密度，这比其他品牌显著更低。