查询词典 cubic equation

The stress-strain curve of new-old concrete and HPRRC, are suggested to be modeled by two sections: the ascending section of the stress-strain curve is simulated by cubic parabola equation and the descending section is simulated by rational fraction, where the theoretical value is in good agreement with the test value.

新—老砼及HPRRC应力—应变全曲线建议采用两段式拟合：上升段采用三次抛物线方程模拟，下降段采用有理分式模拟，理论值与试验结果吻合较好。

Prepared by the cubic spline interpolation function, TSS method diagonal matrix equation function, interpolation function point value function.

C#编写的三次样条插值函数，TSS法求解对角矩阵方程函数，插值点函数值计算函数。

Using cubic spline interpolation function, we construct a finite element model to approximate the nonlinear Schr〓dinger equation, and provide a complete discrete scheme with the conservation properties of mass and energy.

本章从应用角度出发，着重讨论孤波形式的解的计算，为此我们利用三次样条函数的插值基函数构造出非线性薛定谔方程的一个有限元离散模型，给出了具有保质量与能量守恒的全离散计算格式。

In this paper,we study the bifurcation theory of reaction diffusion equation,we give a rigorous bifurcation analysis for a reactor model with combination of quadratic and cubic steps.

在无差速流动反应扩散模型的讨论中，对有二次项和三次项的反应模型的分歧解给出了严密的分析。

Use the cubic function to be the displacement funtion, then base on the energy variation principle, the natural vibration equation is derived, which considers the pressure force and the boundary conditions of the compressed bar.

采用三次函数作为压杆单元的位移函数，基于能量变分原理，构造了一种可以考虑初始内力及边界条件的压杆单元。

Axisymmetric elasticity problem of cubic quasicrystal is reduced to a solution of a partial differential equation with higher-order by introducing displacement function .

本文通过引入位移函数使得立方准晶的轴对称弹性问题化为求解一高阶偏微分方程。

The nonlinear dynamic system with quadratic and cubic nonlinearities is obtained by applying mathematical transformation to the equation.

基於Karman方程的动态比拟，运用Galerkin法，选用合适的正交函数将控制薄板振动的偏微分方程离散化为常微分方程，得到一带有平方和立方非线性的参数激励和外激励联合作用的非线性动力学系统。

The simulated result from SAWAH model shows the averaged flux infiltrating into hard pan is 0.53 billion cubic meters annually. Based on the empirical equation used by Taiwan Provincial water conservancy Bureau, the infiltration capacity of paddy field is computed and graded into by six levels. The Geographical Information System is adopted to present the results.

ARC/INFO及ARCVIEW等地理资讯系统软体被应用於评估分级水稻田入渗情形，依据水利局设计规范经验公式估算四层(0～30公分，30～60公分，60～90公分，90～120公分)土壤质地入渗率后，复利用调和平均法估算四层土壤质地之平均入渗率，最后将水稻田对地下水补注效果区分为六级。

The system can be modeled as a parametrically excited equation with damping term and cubic terms of x and x, etc.

针对海洋工程中的潜水艇拖缆问题的参数激励方程，研究其稳定性和复杂动力学特性。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。