Aerosols also affect cloud microphysics because they act as nuclei around which water droplets or ice forms.
同时，因为它们是小液滴和冰晶形成需要的凝结核，因此尘埃微粒还能在云微物理学层面给云层带来改变。
2
The rapid motion of the electros causes the sluggish nuclei to "see" the electron as a charge cloud rather than as a discrete particle.
电子的快速运动使得缓动的核把电子“看成”象电核云，而不是象分立的粒子。
3
Hail clouds were classified 6 kinds according to scale: thunderstorm cloud, convective cloud, mesoscale convective system, cold-cloud-nuclei, cloud field of system clouds, and edge of cloud cluster.