产品品类选择准则
Product class’s choice criteria
钢产品分类
Steel products classification and definitions
各国统一关税商品分类
brussels tariff nomenclature
罐头食品分类
Classification of canned food
基于贡献率的食品分类法
contribution ratio based classification
区域产品分类与选择
the classification and selection on regional products
珍品分类
classification of treasured wares
并行分类算法
parallel sorting algorithm
分行分层
row-by-row and stratified