瞬变过程和动态特性分析在开关变换器的研究设计中占有重要地位。
The analysis of transient behavior and dynamic performance plays an important role in the research and design of switch converter.
理论分析和实验研究表明，使用特征线法计算管道系统时，在大小管连接截面处，应考虑到该处的动量变化，才能准确描述液压管道系统的瞬变过程。
The paper discusses the ultimate loads of foundations calculated with the characteristic line method and the determination of the ultimate bearing capacity of foundations.
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