1、四项
... 四项 = quadrinomial 四项 = tetrachoric 四马二轮战车 = quadriga ...
tetrachoric correlation四分相关;四项相关;相关系数
tetrachoric function四项函数;四元函数
Tetrachoric table四分表
tetrachoric correlation matrix四分相关矩阵
tetrachoric correlation coefficient四分相关系数
blood clotting tetrachoric凝血四项