The results of mechanical test show that is bending strength, toughness against impact and void ratios can be improved after the rich iron matris is added with rare earth.

力学性能测试结果表明：添加稀土的富铁胎体及其金刚石复合材料的抗弯强度、 冲击韧性和孔隙度均有明显的改善。

Results We can turn the complicated matris forecast into the simple formula so that most of statistics workers unfamiliar with matris may use this model to do some predictive works.

结果通过推导把复杂的矩阵运算转化为直接代入公式进行计算，这样对于不具备矩阵知识的广大统计工作者都可应用本模型进行预测分析。