测定粒度范围
Determine the particle size range
以上为机器翻译结果，长、整句建议使用 人工翻译 。
实验表明，用圆盘离心沉降法测定几种石墨粒度分布情况与扫描电镜照片粒径范围接近。
Results indicate that the particle size distribution of several kinds of graphite measured by this method is similar to the particle size range shown in scanning electron micrograph.
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