三次方程

研究发现，企业的多元化水平和企业价值的变化，满足三次方程。

The diversification level and changes in the value of enterprises meet the cubic equation .

我必须解出这道三次方程。

I must work out the cubic equation .

铸钢件补缩系统三次方程CAD实用化研究

The Practicality Study on Feeding System of Steel Castings by CAD

基于三次方程的LSB隐藏信息的盲检测

Blind Detection of LSB Steganography Based on a Cubic Equation

由域论的Galois理论，我们知道实系数三次方程有根式解。

Based on the Galois theory , we know the root solution of real coefficient cubic equation .

Non-Archimedean空间中三次方程的稳定性

Stability of the cubic functional equation in a non-Archimedean space

当失谐量不为零时，通过求解FEL三次方程讨论了频率失谐与FEL增益间的关系。

In order to analyze the relationship between the power gain of FEL amplifier and the frequency detuning , the usual cubic characteristic equation of 1D FEL theory is solved when the frequency detuning is far from zero . 3 .

分析矩形梁纯弯曲受损时可以得到一个现时截面中性轴位置y0和无量纲化弯矩m的关系式，它是一个关于y0的三次方程。

A cubic equation which is about y 0 can be founded when the rectangle beam in the purely bended brings about damage .

将化学平衡方程和物料衡算方程进行数学变换，用牛顿迭代法求解二元三次方程，从而达到快速、准确地计算CHOSI非均相系统的平衡组成。

Two third-order polynomial equations mathematical derived from the chemical equilibrium and mass balance equations , are solved by using Newton 's reiterative method such that the equilibrium compositions of the above system could be computered rapidly and accurately .

拐点和一元三次方程的求根公式

Inflection Point and the Formula of Extracting Roots on Cubic Equation

可以解一元二次，一元三次方程组。

Possible solutions to the quadratic , cubic equations .

符号系数二元三次方程组的组合矩阵方法

The approach of combination matrix on bivariate three degree polynomial equation system with symbolic coefficients

基于一元三次方程求解的地心坐标至大地坐标的严密变换

A Rigorous Conversion from Geocentric to Geodetic Coordinates Based on the Solution to Univariate Cubic Equation

通过对三次方程的求解，得到了凸极同步电机稳定极限求解的新方法&解析计算的一般公式。

After solving it , a new analytic method to calculate the stability limit of salient-pole synchronous electric machine can be obtained .

在实际工作中为此要多次反复求解二元三次方程组。

In the practical work we have to obtain the solution of the binary third-degree equation again and again for many times .

结果表明：百分最小二乘法得出的三次方程为最佳拟合关系式。

The computed results show that the third order equation derived by the method of least percentage squares is the best regression equation .

结果表明：①三次方程是最适合牦牛和藏羊的生长曲线；②天峻牦牛的生长效率最高，尽管海晏牦牛的初生重最大，但其生长速率最低；

Tianjun yak has the highest growth efficiency , Though Haiyan yak has the highest primary body weight , the growth rate was lowest .

计算部分预应力混凝土梁开裂后截面应力时，需求解中和轴高度的三次方程，使计算显得比较复杂。

It is rather complicated to compute the neutral axis in partially pre-stressed concrete beams after cracking , since we have to solve a cubic equation .

考虑磁扩散率为温度的函数以及绝热条件，线性扰动磁流力学方程组的色散方程是频率的三次方程。

The dispersion equation of linear disturbance magnetohydrodynamics equations ' is an algebraic equation of third power of frequency when the magnetic diffusivity is considered as a function of temperature .

在铸钢件冒口设计中，模数法是一个广泛应用的计算方法，三次方程解析法是模数法中较为严密的计算方法。

In riser design of steel casting , modulus method is the most widely used method , and the cubic equation method is a most close method in modulus method .

各生长指标累积绝对、相对生长速率的季节动态也呈S型曲线，同样三次方程拟合效果最佳。

The seasonal dynamic of accumulation absolute growth rate and accumulation relative growth rate of growing indices were both " S " curve shaped , and the cubic fitting curves were best also .

介绍了一元三次方程一般式化为标准式的方法，结合图形给出了标准式的实数根的分布情况，从而解决了任意一元三次方程的实数根的分布的问题。

The method that simple cubic equation was changed from general to standard was introduced and the distribution of standardized real root was illustrated , which solved the problem of the distribution of any real root for simple cubic equation .

基于一元三次方程的求解，给出了地心坐标向大地坐标转换的严密计算公式，并用算例说明了其正确性。筑路工程土方量计算严密公式

Based on the solution to univariate cubic equation , this paper puts forward a rigorous coordinate conversion method from geocentric system to geodetic system . The Rigour Calculation Formulation of the Quantity of Earthwork About the Project of Building Road

水文缆道主索设计的难点在于计算主索加载拉力，需要求解一元三次方程，通常是采用手工试错的计算方法来求解，计算工作量非常大，且繁琐。

It is a thorny matter in designing of hydrological cableway to calculate loading tension of main cable through deviation of cubic equations of one variable , which only to be undertaken by large quantity of manual examinations and calculations .

最后实验结果表明，该剔除算法能够显著的减少连续碰撞检测中的误报数量，从而避免了大量的三次方程的求解运算，提高了连续碰撞检测的速度。

The experimental results show that the culling algorithm can significantly reduce the number of false positives in the continuous collision detection , thus the algorithm can avoid solving a large number of the cubic equations to improve the speed of continuous collision detection .

文给出了三次方程有三重根、二重根及无重根的判别定理，并给出求重根的公式。

This paper presents a discriminating theorem for the repeated root of a cubic algebraic equation and a solution formula of the repeated root , with the theorem we can determine there exists a triple root , a double root or no repeated root in solutions of the cubic equation .

控温系统以8031单片机为基础，采用了三次回归方程计算测量温度，运用PID调节控制，提高了高温实验炉的可靠性。

The controlling system is based on CPU 8031 . PID regulating control is adopted to improve the reliability of the hotplate .

关于三次Diophantine方程的求解问题

On the Solution of the Third Order Diophantine Equation

基于三次同余方程的增强的Rabin密码体制

Enhanced Rabin cryptosystem based on cubic congruence equation

一阶三次微分方程在极坐标变换下的求解定理及应用

The Solving Theorem of First Order and Third Power Differential Equation under Transformation of Polar Coordinates and Its Application