Then base on the object-oriented theory of software engineering & PDM theory, one object-oriented model of LED lamp is presented.

然后根据面向对象的思想和产品数据库管理理论，提出了面向对象的LED灯具建模解决方案。

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At first, the paper gives analysis to the theory and technique of Product Data Management (PDM).

本文首先对产品数据管理(pdm)理论和技术进行了深入的分析。

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