二次的

The aim of this article is to classify the definite value of quadric curve, to sum it up, to arrange it, and to give evidences of it.

把二次曲线中的定值进行了系统分类、归纳整理，并给予证明，可供学习二次曲线的性质时参考。

A method to construct an interpolation curve of rational quadratic B-spline G continuity is given.

给出二次有理B样条G2连续拼接的条件，提出一种二次有理B样条G2连续插值曲线的构造方法。

The controllability of Secondary Voltage Control system is discussed by using the dynamic model derived in this work.

从文中所建立的二次电压控制动态模型出发，讨论了二次电压控制系统的可控性问题。

This conclusion can be considered as the basis of Secondary Voltage Control in practical applications and can simplify the design of Secondary Voltage Control strategy greatly.

这一结论为二次电压控制的实际应用奠定了基础，同时也可大大简化二次电压控制策略的设计。

The main factor affecting weld quality of spot welding is net voltage fluctuation and the change of secondary loop impedance.

影响点焊电流恒定输出的主要因素是网压波动和二次回路阻抗的变化，二次回路阻抗变化会导致负载功率因数角变化。

Based on the experimental data,the mathematical model and the equation for the relationship between the concentration of MgCl_2 solution and its boiling point and secondary steam temperature at any pressure were established.

根据实验测定的数据建立了数学模型，研究确定了任意压强条件下氯化镁溶液质量分数与其沸点及二次蒸汽温度的关系式，通过直接测定溶液沸点及二次蒸汽温度，即可确定出氯化镁溶液质量分数。

Consequently, when applied to minimize a strictly convex quadratic function, the proposed methods terminate at the solution of the problem finitely.

因此，当目标函数是严格凸的二次函数，且采用精确线性搜索时，这些修正的共轭梯度法具有共轭性和二次终止性。

It is also pointed out that an n-mode boson coupled quadratic Hamiltonian can be diagonalized by a "negative unitary" matrix which is an element of complex symplectic group SP(2n,c),and an n-mode fermion coupled quadratic Hamiltonian can be diagonalized by a unitary matrix which is an element of complex fermion group F(2n,c).

并且指出，对于n模玻色子耦合二次型哈密顿量，通过一个负幺正矩阵它是复辛群SP(2n，c的元素可以把它对角化；对n模费米子耦合二次型哈密顿量，通过一个幺正矩阵它是复费米群F(2n，c的元素可以把它对角化。

The trigonometric polynomial curves retain the main superiority of the quadratic Bézier curves.

给出了二次三角多项式形式的Bézier曲线，基函数由一组带形状参数的二次三角多项式组成。

In this paper, using the method of the Lagrangian dual, an unconstraint but nondifferentiable optimal problem in input space is proposed as the dual of the quadratic programm...

证明了该分片二次函数的极小点对应原二次规划的ε最优解，而用此极小点可直接算出支持向量和最优超平面。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。