在进行系统分析和软件开发中，需要真实地描述研究对象在其生命周期中的变化，动态分类正是这样一种机制。
It is necessary for us to describe the transformation of the objects during their life cycle when we analysis system and develop software. Dynarnic classification does satisfy the need.
从系统分析的角度建立用于确定“产品-包装-运载体”在系统与部件水平的动态特性的实验技术理论。
A set of experiment-based technical scheme was established to determine the dynamic characteristics at system and component levels of a product-packaging-carrier system.
指出物流需求预测不仅要考虑当前的资源情况和经济水平，还要用动态的眼光进行系统分析。
Finally, the paper points out that logistics demand forecasting not only need to consider existing resources and economic levels, but also need to make a system analysis from a dynamic perspective.
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