coarse particle size meaning in English

粗粒度

( 2 ) the properties of the material with finer andalusite particle size are superior to those of coarse particle size at lower temperature , but properties of material of fine and coarse particle size have little difference at higher temperature . this illustrates that the andalusite particle size can lower the sintering temperature and that it brings forth not remarkable influence on the property of the material when the material is sintered completely
( 2 )对于不同粒度的原料，在烧成温度较低的情况下，粒度小的材料性能明显高于粒度大的材料，但在烧成温度较高的情况下，两者差别不大，说明原料粒度减小能降低制品的烧结温度，但在制品均完全烧结的情况下对材料性能影响不大。