cross classification meaning in Chinese

交叉分类
交叉分组

Sampling ; statistical principles of sampling with cross classification according to two hierarchical criteria
抽样.按照两组不同分级准则交叉分类的抽样统计原理
Sampling ; statistical principles of sampling with cross classification according to two equal - ranked criteria
抽样.按照两组完全相同排列准则交叉分类的抽样统计原
No mature seeds were used the method of embryos culture . during culture of the hybrid embryos form different cross classification , the proportion and concentration of hormones were different
对早培育胚进行胚培养发现，不同的杂交组合，杂种胚生长所需的激素浓度和配比不同。