查询词典 simultaneous differential equations

A special analytical solution is derived for the simultaneous differential equations of a dynamic mathematical model for the evaporating surface in supercritical pressure boilers given by Ref.

对文献［1］给出的超临界压力锅炉蒸发受热面的动态数学模型所建立的三个联立偏微分方程组，导出了假定工质压力不随时间变化条件下的解析特解，阐明了该特解的物理意义。

In the secondary modeling,"Hidden Euler" approach is applied to solve the nonlinear simultaneous differential equations, and the discrete nonlinear algebraic equations are calculated by "Newton-Raphson" numerical approach.

二次建模时，采用隐式欧拉法求解常微分方程组，离散后形成的非线性代数方程组采用牛顿-辛普生方法进行计算。

The topics to be covered in the course are Integration and Economics Applications, Linear, First-Order Difference Equations, Nonlinear First-Order Difference Equations, Linear Second-Order Difference Equations, Linear First-Order Differential Equations, Nonlinear First-Order Differential Equations, Linear Second-Order Differential Equations, Simultaneous Systems of Differential and Difference Equations, and Optimal Control Theory.

讲授内容包括积分与经济的应用、线性一阶差分方程式、非线性一阶差分方程式、线性二阶差分方程式、线性一阶微分方程式、非线性一阶微分方程式、线性二阶微分方程式、差分与微分的联立方程式、最适控制理论。

Then, we formulated the simultaneous differential equations and the car following theory which explain the urbanization motion track and these two kinds of process. The case study using the regression analysis to construct and verify the modal analyzes the regular pattern of urbanization and differences of development among twelve urban land readjustment areas in Tainan.

其次，提出具有数学意义的建地化、市街化基本原理，据此建立联立微分方程式，并且使用「跟车理论」的物理决定论类推说明市街化曲线模型，以把握市街化运动的具体法则；并以台南市12个重划区为实证地区，利用回归分析方法来进行模式校估及检定，俾利於分析市街化之规律性及各地区之发展差异。

Three displacement functions w,Gand ψare introduced in this paper tosimplify motion equations of elasticity problenis in spherically isotropic media to an indepen-dent partial differential equation concerning one displacement function ψand simultaneous equations concerning two other displacement functions w and G.

本文引入三个位移函数，将球面各向同性弹性力学运动方程，简化为关于ψ的二阶偏微分方程，和关于W和G的联立方程。在静力学问题中，联立方程可进一步简化，w和G可用另一位移函数F表示，而F满足一个四阶偏微分方程。

I use an example quoted by Hu Jiaqi:"It is reported that America separates the DNA of a kind of virus by making use of genetic technology and combines it with another kind of DNA. Finally, they get a kind of virulent biological agent called a "pyrotoxin". Someone discloses in private that 20 grams of such a kind of biological agent could result in the global death of 6 billion people due to infection."

我在这里例举胡家奇所引用过的例子："据报道，美国利用转基因技术，将一种病毒的DNA分离出来，与另外一种DNA进行结合，拼结成一种剧毒的"热毒素"生物战剂，且私下有人透露，这种生物战剂只需20克，就可以导致全球60亿人全部感染死亡。"

Waiting, for the queers and the coons and the Reds and the Jews.

等待着疯子和黑人还有红色共产主义者还有犹太人