...都是单一结晶体，而是多个粒子聚结在一起的粒子状，为了区别单一粒子和聚结粒子，将单一结晶粒子叫一级粒子（primary particle），单一粒子的聚结体叫二级粒子（second particle）。
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Primary particle structure 单粒构造
pigment primary particle 颜料原级粒子
primary particle flux 一次粒子通量
primary particle load 一次粒子负荷
density of primary particle flux 一次粒子通量密度
integral load of primary particle 一次粒子积分负荷
the primary particle 一次粒子
The influence of the primary particle's size and the sintering time on the secondary particle was investigated.
分别研究了一次颗粒尺寸、烧结时间对于二次造粒的影响。
It was found that this grafted carbon black was the nano-particles and the particle size was closed to that of the primary particle.
研究结果表明，通过上述接枝处理后，纳米炭黑粒子分散均匀，且粒径接近原生粒径。
The surface of primary particle of CB consists of randomly ranged fine graphite-like crystals with Fullerene structure carbon, and shows rough atomic steps' morphology.
炭黑原生粒子表面由细小的石墨状晶体无规排列构成，并存在富勒结构碳，呈凹凸不平的原子台阶形貌。
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