particle diameter

• 颗粒直径

particle diameter的用法和样例：

例句

1. The influences of jetting gas velocity and particle diameter on fluidization were analyzed.
   分析了风管小孔风速和颗粒直径对床内流化的影响。
2. The coefficient of convection heat transfer increases with increasing the particle diameters.
   对流换热系数随着颗粒直径的增大而增大。