椭圆体模型是空间引用系统定义的第一部分。
The ellipsoid model is the first part of a spatial reference system definition.
按照这个定义，模型是关于系统的描述。
According to this definition, a model is a description of a system.
信息模型——应用程序在子系统的基础上定义其信息模型。
Information model — An application defines its own information model on top of its subsystems.
这些模型可以定义系统的结构和行为。
These models may define the structure and behavior of the system.
本文给出了复杂系统模型结构辨识问题的基本假设和定义；
This paper deals with the structure identification problem of complex system models.
提出了工艺系统的可靠性定义，重点研究以质量参数为指标的工艺可靠性模型。
The process reliability model with the quality parameter as an index was discussed.
通过定义审批流程的操作，建立了原型系统中审批发放流程的过程模型；
The process model of the approval flow was built by defining its operations.
通过定义审批流程的操作，建立了原型系统中审批发放流程的过程模型；
The process model of the approval flow was built by defining its operations.
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