Itemset项集itemn.项目；条款；一件商品（或物品）；一则或一条新闻adv.也Item Management Specialist项目管理专家Items found for all owners一切所有者的项目Item Response Theory Model项目反应理论模型Item Identification Number物品识别编号items of basic construction建设项目item difficulty graded test题目由易到难的测验items of psychological test心理测验项目item supervising department项目监理部items of basic eonstruetion建设项目items with the confrontation同场对抗项群