composite particles

• 复合粒子

composite particles的用法和样例：

例句

1. The results demonstrate that the presence of the fixed charges in the composite sphere is to slow down its settling velocity relative to that of an uncharged one.
   研究结果显示，相对于不带电之复合粒子，固定电荷的存在将减缓粒子的沉降速度。