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对参数设计中序贯淘汰水平法（ＳＥＬ）和绝对偏差法进行了研究和改进，提出了以ＳＥＬ法与绝对偏差法结合为基础的自动变间隔迭代搜索法。针对不同的典型实例与以前的参数设计方法进行比较，结果证明该方法高效可靠，且具有较好的可操作性。为工程实用奠定了一定的基础。
The sequential elimination (SEL) method and the absolute deviation method in parametric design are studied and improved. An automatic variable interval iterative search method based on SEL method and absolute deviation method is proposed. The results show that the proposed method is efficient and reliable, and has good operability for different typical examples compared with previous parameter design methods. For engineering practical laid a certain foundation.