When external magnetic fields are absent, there may be a competitive growth between (100) and (111) surfaces; and the final morphology of particles are irregular polyhedra.
而当外磁场不存在的时候，(111)面和(100)面可能存在竞争生长的关系，从而纳米粒子呈现不规则的多面体形。
And the morphology and size of particles are important factors to influence their performance.
而粒子的颗粒形貌和尺寸是影响其使用性能的一个重要因素。
The optic microscopy and electron microscopy have been used to observe the morphology and structure of individual char particles, and determine their distribution during combustion.
本文利用光学显微镜和电镜，阐述了不同残炭颗粒的形态和结构以及它们在燃烧过程中的分布特征。
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