本文在对基于PEBB的分布式电力电子系统的层次结构进行划分的基础上，将基于PEBB的功率变换器分为两部分：应用管理器和PEBB。
On the basis of the division of the distributed control structure of power electronic system based on the PEBB, the power converter contains two parts: application manager and PEBB.
级联式BDC 具有：两部分可分别优化设计、功率密度高、适于大变比变换的应用等优点。
The two-stage BDC has the advantages of ZVS switching, high power density, convenient to optimum design and convenient to modularize.
图形的交互式编辑部分主要研究了图元的拾取算法和使用变换矩阵实现对图元的旋转、比例缩放和平移等二维变换。
As for the interactive graphic editing, the article mainly focuses on graphic element collect algorithm and two-dimension transformation such as rotation, scale and translation using convert matrix.
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