PDM system is developed making use of embedded workflow driving product configuration management approach. The case demonstrates feasibility of approach to the model.

基于嵌套式工作流驱动型的产品配置管理的设计方法开发了一个PDM系统，示例证明其方法是科学有效的。

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The utility model belongs to an electromechanical product, in particular to a rodless driving mechanism for a reciprocating oil well pump.

本实用新型属于机电产品，特别涉及一种往复式抽油泵无杆驱动机构。

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