混合逆数值算法是一种两步算法，包含直接矩阵反演求逆和二次规划两个步骤。
The Hybrid Inverse numerical method is a two-step numerical method, comprising of direct matrix inversion and quadratic programming.
本文是研究利用天然地震PS转换波及PPP等二次波到时资料反演地壳上地幔速度结构的尝试。
An inversion of velocity structure of crust and upper mantle by using converted PS wave and multiwave PPP etc, is reported in this paper.
在有心二次曲线的反演定义、变换式的基础上，推导出此种反演变换的一些性质，通常的关于圆的反演的性质可作为它的特例而得到。
In this paper, we discuss some properties of the reversion for central quadratic curve on the basis of general reversion definitions and its transformations.
在有心二次曲线的反演定义、变换式的基础上，推导出此种反演变换的一些性质，通常的关于圆的反演的性质可作为它的特例而得到。
In this paper, we discuss some properties of the reversion for central quadratic curve on the basis of general reversion definitions and its transformations.
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