Mest of the sophisticated new products developed are based on the country \'s natalalraw materials , mainly bauxite , magnesite and graphite which occur in abundance .
多数新开发的优质制品是以我国丰富的耐火原料资源(主要是高铝矾土、菱镁矿和石墨)为基础的。
Object Evaluation of the comparative methods of independent samples : Mest , u-test , Satterthwaite method , Cochran-cox method and Wilcoxon rank-sum test , offers some information for statistical analysis in practice .