Firstly introduced the basic conception and model of RBAC96, then according to the real demand of the office automation system, putted forward the access control model.
介绍RBAC96的基本概念和模型，结合办公自动化系统中实际的需求，提出自己的访问控制模式。
Then introduced the basic conception, model and their solving schemes for the electronic commerce.
然后介绍了电子商务的基本概念、模型及解决方案。
The conception model, assembly model and parts model of pneumatic hole impinger are established by the method of intelligent modeling.
采用智能产品建模的方法，建立了气动潜孔冲击器的概念模型、装配模型和零件模型。
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