The quadratic curve is the necessary and sufficient condition of the noncentral curve as well as the equation's representative form.
二次曲线为非中心曲线的充要条件及方程表示形式。
Theoretical study shows that the 2D-convolution integers for noncentral point evaluation can be found just by using linear combination of those for the central points.
理论研究表明二维非中心点评估的卷积整数是一些确定的中心点的卷积整数的线性组合。
The relation between noncentral difference quotients convergence and derivative was discussed by drawing the concept of noncentral difference quotients convergence in this paper.
引入非中心差商极限概念，讨论了非中心差商极限存在与可导的关系，以及对称导数在研究函数性质方面的一些应。
The noncentral parameter of statistic distribution often needs to be estimated in error analysis, statistical test, deformational analysis, reliability analysis, and optimum design, etc.
在研究测量误差分析、模型误差统计检验、变形分析、可靠性分析和优化设计等问题中，经常需要对统计量分布的非中心参数进行估计。
The noncentral parameter of statistic distribution often needs to be estimated in error analysis, statistical test, deformational analysis, reliability analysis, and optimum design, etc.
在研究测量误差分析、模型误差统计检验、变形分析、可靠性分析和优化设计等问题中，经常需要对统计量分布的非中心参数进行估计。
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