- multilevel data flow chart
- multilevel data flowchart
下载手机词典可随时随地查词查翻译
分层数据流图的英文
例句与用法
- The feasibility study of this project and the method and process of structured system analysis are introduced in succession . the primary content of requirement investigation and the function requirements are presented . partial operations in this field are described using operation flow diagram and the process of disassembling and analysis of this system is described using layered dfd ( data flow diagram )
首先简要介绍了技术方案的选择和项目的可行性研究；接着简要介绍了结构化分析法的方法步骤，介绍了本项目需求调查的主要内容，并用业务流图对应用领域的部分业务进行了描述；用分层数据流图描述了对系统的分解和分析过程，较详细地描述了系统的功能需求。 - Then it presents the function of the input information such as mps ( master production schedule ) , bom ( bill of material ) . finally , it gives all kinds of ways to optimize the computing of mrp , then presents the optimized mrp computing scheme . in chapter 3 , after making a detailed investigation into manufacturing industry , it analyzes the function demand of mrp and design the function accordingly
第三章在对我国制造企业的充分调研的基础上，分析了物料需求计划子系统的功能需求；根据系统的功能需求，用分层数据流图分析了数据间的复杂关系，给出了相应的e ? r图，并设计了相关的数据实体；该章的最后，结合我国制造企业生产管理的实际情况，对物料需求计划子系统进行功能设计，使物料需求计划子系统可以适合各种生产类型的制造企业对于物料需求计划功能的需求。