It is a quadratic equation, so you get two solutions of which one of them is nonphysical, so you can reject that one.
这是一个两次方程，你会得到两个，和物理无关的答案，你可以舍掉那一个。
In this paper, the cubic equation is simplified into a quadratic equation, thus greatly simplifying the calculation.
本文将三次方程简化为二次方程，使计算得到很大简化。
As a result, threading a perfectly weighted through ball to your striker releases a feeling of achievement more potent than completing a quadratic equation.
因此，为你的射手送上一记出色绝伦的直传会让你有一种成就感，这可比做一道二次方程题更有效。
A new compensation method for the temperature coefficient of the sensor-the correction method of quadratic equation and the algorithm for temperature compensation is put forward.
提出一种对传感器温度系数的校正新方法——采用二次方程校正法和温度补偿算法相结合的温度校正方法。
Theoretically speaking, it is a rather-clearly discussed subject to standardize the quadratic equation into the normal forms by spinning the coordinate axis so as to approach the shapes of its curves.
从理论上讲，通过坐标轴旋转将二次方程化简为规范形式，从而讨论其曲线的形状，这已是讨论得相当明了的课题。
The problem of attaining the tangent equation of a certain point on a quadratic curve is basically solved in plane analytical geometry.
平面解析几何对“求过二次曲线外的点所引曲线切线的方程”的问题，未给出一般的方法和公式。
According to the features of shaft kiln burning, a mathematical model is established and a quadratic regression equation for calculation of proper burning range of road cement clinker is presented.
根据立窑煅烧的特点，建立立窑煅烧数学模型并且提出适宜计算道路水泥熟料烧成范围的二次回归方程。
A new simple pore mechanics model is established based the pore structure of low permeability reservoir rock, from which the quadratic equation of effective stress and permeability can be educed.
针对多孔介质特殊的孔隙结构特征，建立了一个新的简化孔隙力学模型，并由该模型导出了渗透率与有效应力的二次多项式关系。
Consider the distributed parameter system described by the second order partial differential equation of composed type, we discuss its a boundary optimal control problem with quadratic performance.
考虑用二阶复合型偏微分方程所描述的分布参数系统，研究了它的一个使平方性能指标达到最小值的边界最优控制问题。
Finally, a quadratic regression equation is used to represent LTV system, and the GA and AIC are introduced to determine the structure of the parameter sub-model.
然后利用遗传算法和AIC确定参数子模型的结构，以获得最终用于表示LTV系统的二次回归方程。
In this paper, we consider a quadratic Lagrangian finite element equation arising from discretizations of 3d elliptic problem with jump coefficients under any tetrahedral partition.
本文针对带有间断系数的三维椭圆问题，讨论任意四面体剖分下的二次拉格朗日有限元方程的代数多重网格法。
Given a response surface equation in quadratic form, the Six Sigma Black Belt will be able to compute the stationary point.
给出一个二次方程序形式的响应曲面公式，六西格玛黑带应能计算出驻点。
Taking degree of hydrolysis(DH) as criterion, the pancreatin hydrolysis of sesame protein was studied by applying a five factors quadratic regression orthogonal rotation grouping equation experiment.
以水解度（DH）为指标，采用五元二次回归正交旋转组合实验对胰酶酶解芝麻蛋白工艺进行探索。
Taking degree of hydrolysis(DH) as criterion, the pancreatin hydrolysis of sesame protein was studied by applying a five factors quadratic regression orthogonal rotation grouping equation experiment.
以水解度（DH）为指标，采用五元二次回归正交旋转组合实验对胰酶酶解芝麻蛋白工艺进行探索。
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