并对应用于某些情况下的已有等效简化模型进行必要的改进。
Then, an improvement of the equivalent simplified models is presented used in some circumstances.
运用光学传播矩阵理论，给出了一个机械调q二氧化碳激光器谐振腔的等效简化模型。
By using the theory of optical propagation matrix, a simplified model that is equivalent to a mechanical Q-switched CO_2 laser is carried out.
典型的极化磁系统主要有四种结构，其简化磁路等效数学模型是继电器设计的基础。
The typical polarized magnetic system has mainly four structures and its simplified equivalent magnetic circuit model is the base of the design of the electromagnetic relay.
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