采用两步工艺法制备具有二次微粒结构的白炭黑，并对其性能进行研究。
The silica with secondary particle structure was prepared by a two-step process, and its properties were investigated.
一些很小的颗粒都有晶体结构，能够影响光子，光的微粒的流动。
These are tiny particles that have a crystal structure which influences the flow of photons, the particles of light.
作为抗氧化剂，番茄红素可以保护细胞结构和DNA远离自由基的影响——自由基是一种会破坏健康细胞、使癌细胞扩散的微粒。
As an antioxidant, lycopene protects cell structures and DNA against the nefarious effects of free radicals-small particles that damage healthy cells and allow tumor cells to develop.
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