材料的选择包括水泥的品质、集料粒径、集料强度、颗粒形状和质地、化学外加剂、矿物掺合料等。
Selection of materials include characteristics of cement, particle size, intrinsic strength, shape and texture of aggregate, chemical admixtures and mineral admixtures, etc.
采用颗粒堆积模型，讨论了矿物掺合料颗粒的相对粒径、体积含量对颗粒混合物体系堆积密实度的影响。
The effects of relative particle diameter and particle volume fraction on the packing density of particles mixtures were discussed by granule packing model.
对西安市路面积尘粒径分布和不同粒径中矿物质量组成的研究表明，路面积尘质量主要集中在30～50目（0。
Study on road dust with grain diameter distribution and mineral composition of various grains in Xi'an demonstrated that road dust mainly existed in grains with a diameter of 30~50 mesh(0.
请仔细观察这块花岗岩石，其中的红色矿物占全岩矿物的百分之70，而它们的颗粒形态多数是矩形的，颗粒的粒径在3个毫米。
Look at this granite carefully. The red-colored minerals account for some 70% of the total rock. They are mostly rectangular in shape with a grain size of 3 millimeters.
请仔细观察这块花岗岩石，其中的红色矿物占全岩矿物的百分之70，而它们的颗粒形态多数是矩形的，颗粒的粒径在3个毫米。
Look at this granite carefully. The red-colored minerals account for some 70% of the total rock. They are mostly rectangular in shape with a grain size of 3 millimeters.
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