以下为句子列表：
英文: A mathematical method for optimum fitting the measured lift data of the non-symmetrical cam profile by using the least squares and the floating orthogonal lattice algorithm is presented.
中文: 本文采用最小二乘法和浮动正交网格法对非对称型配气凸轮的实测升程数据进行了优化数学拟合。
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英文: Abstract: Some optimum fitting methods for treating the measured lift data of the symmetrical cam profile are presented in the previous decades.
中文: 文摘:已有的配气凸轮实测升程数据的优化拟合研究基本上都是针对对称型配气凸轮展开的。
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英文: As the cam profile with constant-velocity-constant-acceleration ramp feature and with continuous higher derivative lift feature is widely adopted in the advanced high-speed internal combustion engines, the cam ramp profile is fitted with a reasonable func
中文: 考虑到高速内燃机的凸轮大多采用具有等加速-等速特征的缓冲段和高阶导数连续特征的工作段型式，用等加速-等速函数拟合缓冲段实测升程数据，用整体式高次多项式函数拟合工作段实测升程数据。
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英文: This method uses the law of conservation of energy, adopts the method of sectioning and the cam profile is designed according to the outputted speed curve.
中文: 该方法应用能量守恒定律，采用分段的方法，按输出的速度曲线设计凸轮廓线。
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