Through MC simulation test, the relation of average grain size and Monte Carlo steps was established and the parameters of MC model were work out by the method of regression analysis.
运用MC模拟试验，建立了平均晶粒尺寸与蒙特卡罗步数之间的关系，利用回归分析方法确定了MC模型常数。
The authors introduced the methods and advance of grain size analysis technique, including direct measurement, sieving analysis, setting method and the laser grain-size analyzer;
本文主要介绍粒径测试技术方法及其新进展，包括传统的直接测量法、筛析法、沉降法和以计算机为依托的激光粒度测试仪法；
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