动态物理模型以直观的物理方式动态、实时响应用户操作，具有物理特性与几何模型和行为模型相融合的特征。
Dynamic physical model makes dynamic and real time response to user operation in a visual physical way, and is the fusion of physical characteristics, geometric model and behaviour model.
在文中提出一种实时群组编辑器模型并且详细描述其中操作组播的原则以及实现方式。
This paper proposes a model of real-time group editor and describes principles and design methods of the operation multicast in detail.
简单介绍了嵌入式实时操作系统的板级支撑包的开发，包括概念，开发方式，开发流程，测试方式的介绍。
This article introduces, the developing method of embedded real time system's BSP (board support package), including introduction of concept, develop method, test method.
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