The quadratic performance index optimal control technique was introduced to design the optimal sliding mode.

And he inherited al-Khwarizmi's solution to quadratic equation.

同时,他继承了前辈花拉子米关于一元二次方程的解法.

The child then knows how to solve a quadratic equation.

于是学生就会解二次方程了.

Usually, x is a quadratic equation , x has two different solutions.

二次方程式通常都有两个不同的解.

Quadrature scheme is a scientific method of arranging multi-factors and multi-standards.

正交设计是安排多因素,多水平的一种科学设计方法.

The conventional Gauss quadrature is kept in the integral element far away from the inner point.

而远处单元的积分仍保持常规高斯积分.

Set up quadrature cells in the domain.

设置域内的积分单元.

These extensions lead to generalized Gaussian quadrature formulas which have high algebraic precision.

这一推广导出了具有高阶代数精度的广义高斯求积公式.

So why are opposition and quadrature so significant?

那么为什么相对和正交现象这么奇特 呢 ?

The system distortion is inevitable in ultra-wide-band quadrature demodulation receiver cons i sting of analog devices.

由模拟器件构成的超宽带正交解调接收机不可避免地存在系统失真,这些失真的存在有时会严重影响系统的性能.

Differential quadrature element method is an alternative numerical solution techniques.

微分求积单元法是一种可供选择的、能优越的数值计算方法.

If the coefficients 1, then we call a positive quadrature formula.

如果系数1, 然后我们称之为积极的求积公式.

We call this surface the stress quadric.

我们称这个曲面为应力二次曲面.

Based on the quadric OPENGL screensaver program code, involving the rendering quadric algorithm with texture mapping.

基于OPENGL的二次曲面屏保程序代码, 涉及二次曲面的绘制与纹理映射算法.

An algorithm of feature surface recognition based on quadric surface fitting and geometry property was presented.

提出了基于二次曲面拟合误差分析和几何属性分析的特征曲面识别算法.

A new method is offered to extract quadric surface based measured points for reverse engineering.

为逆向工程中基于测量点的二次曲面提取提供了一种新的方法.

The expression of a tangent cone family with one parameter about a quadric surface is discussed.

讨论了二阶曲面的单参数切锥族的表示方法,导出了单参数切锥族的包络面的方程.

Extracting quadric surface from measured data is an important problem in reverse engineering of mechanical parts.

在机械产品的逆向工程中,针对测量数据提取常用二次曲面是非常重要的.

It is a very good exercise machine for keeping your quadriceps strong after surgery.

它是一部在术后保持股四头肌强壮的非常好的练习机器.

Lunges are also an excellent exercise for maintaining quadriceps and hamstring strength.

弓步也是维持股四头肌和腿筋力量的一种好练习.

To strengthen weak knees, the quadriceps group of muscles need to be strengthened.

只有股四头肌被加强的时候虚弱的膝关节才能得到加强.