如果晶核的生成速度较快，而晶核生成后的成长速度较慢，则生成的晶核数目较多，晶粒较细。
If the generation of the nucleation rate faster, and crystal nucleus formation, growth speed is slow, it generated more cell number, grain is fine.
也就是说，在电镀过程中当晶核的生成速度大于晶核的成长速度时，就能获得结晶细致、排列紧密的镀层。
That is, in electroplating process when the generation of the nucleation speed is greater than the growth of the nucleation rate, it can get meticulous, crystallization of closely spaced coating.
事实上，目前普遍公认的理论是：雨的形成依赖于空气中尘粒的存在，因为尘粒可作为晶核，使雨珠在其周围生成。
In fact, the generally accepted theory now is that the production of rain depends upon the presence of dust particles in the air, which serve as nuclei about which the drops may form.
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