requirement for需要, 需要的东西, 要求requirementn.必要条件；要求Requirement Generation System要求生成系统requirement for tax exemption免税规定Requirement Control Authority规格控制部门requirement language processor要求语言处理机requirement meta-information需求信息元Requirement Data Exchange Card需求数据交换卡requirement of medical service医疗服务需求requirement statement language[计] 要求陈述语言, 请示语句语言Requirement of network engineer人才需求requirement definition language要求定义语言