According to the requirement of enterprises, we designed the structure and database of a PDM prototype system, researched the data memory model and built the basic frame of the prototype system.
根据企业调研，本文设计了PD M原型系统的系统结构和数据库，研究了数据的存储模型，建立了PD M原型系统的基本框架。
According to the requirement of enterprises, we designed the structure and database of a PDM prototype system, researched the data memory model and built the basic frame of the prototype system.
根据企业调研，本文设计了PD M原型系统的系统结构和数据库，研究了数据的存储模型，建立了PD M原型系统的基本框架。
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