The computing method of differential throttling and the analytical process of thrust vector of inner nozzle and plug were introduced. The generated moments of pitch were given.
介绍了差分流量调节的计算方法和内喷管与塞锥推力矢量变化的分析过程，计算产生的俯仰力矩。
The analytical formula of track deformation under a single wheel load has been deduced by establishing the track vibration differential equation.
本文通过建立轨道振动微分方程，得到单轮作用下轨道变形的解析表达式。
The analytical conditions that the fractional-order differential systems remain chaotic are obtained by analyzing the stability of the fixed points of the systems.
通过分析系统不动点的稳定性，得到分数阶微分系统存在混沌的解析条件。
Differential equation of motion control of the cracked beam is set up using this model, so that the same analytical methods are applied as crack-free structure for the cracked.
用此模型建立裂纹梁运动控制微分方程，这样，对于含裂纹结构可采用与无裂纹时同样的分析方法。
Second order partial differential equations were given. They were solved by one-dimension method and analytical solutions for magnetic field and eddy current were obtained.
列出二阶偏微分方程，采用一维方法求解得到了磁场、涡流的解析表达式。
Analytical formula of track deformation under a single wheel load was derived by establishing the differential equation of track vibration.
通过建立轨道振动微分方程，得到了单轮作用下轨道变形的解析表达式。
By algebraic dynamical method, the exact analytical solutions of the ordinary differential equations are obtained in terms of Taylor series with local convergent radius.
用代数动力学方法求得了用泰勒级数表示的局域收敛的常微分方程的精确解。
Geodesics on smooth surface have many good geometric properties and there are equivalent partial differential equations and analytical methods solving it.
测地线在光滑曲面上有很好的几何性质，也有相应的测地线偏微分方程表达以及一些解析的方法来求解。
The analytical solutions for these reactor models are shown to agree very well with the numerical solutions to the exact differential equations.
两种模型正合微分方程的解析解与数值解表示出十分的吻合。
A new numerical method, analytical discrete method, for solving ordinary differential equations is proposed.
提出求解常微分方程的一种新的数值方法——解析离散法。
The analytical solutions for ray paths in the fiber are obtained from the ray differential equation and the Gaussian parameters and the imaging formulas of the lens are also given.
从光线微分方程求得纤维中光线轨迹的解析解，并给出纤维透镜的高斯参数及物像计算公式。
When solving different ordinary differential equations, we may take the analytical solution or numerical solution.
不同类型的常微方程可以采用解析解法或者数值解法。
The analytical method is applied in deriving equations for the displacement, velocity and acceleration of the detaching roller installed in the differential mechanism.
本文采用解析法导出了这种差动机构中拔取罗拉的位移，速度和加速度的方程式。
The analytical solutions for these reactor models are shown to agree very well with the numerical solutions to the exact differential equation…
两种模型正合微分方程的解析解与数值解表示出十分的吻合。
Two sets of algebraically explicit analytical solution are derived for the partial differential equation set describing the one dimensional unsteady gas-liquid two phase flow.
对气液两相非定常一元流动方程组导出了两套代数显式解析解。
One-dimensional general model of land subsidence due to pumping is deduced and a semi-analytical method is used to solve this deviatoric differential equation.
推导了以垂向有效应力为基本变量的一维地面沉降的普遍模型，并用半解析方法予以求解。
The differential equations of coal particle gas diffusion under the third kind boundary condition and its analytical solution have obtained on the basis of theoretical analysis.
基于理论分析建立了第三类边界条件下的煤粒瓦斯扩散方程，并给出了解析解。
The analytical truncation error formulas of a partial differential equation are given for the upstream scheme and the centered difference scheme, respectively.
然后引入参考解的办法， 用来分离更为一般的微分方程求解过程中的截断误差和舍入误差。
Venant's differential equations. The general analytical solutions of 1st and 2nd approximations have been given for one directional wave flow which propagates into the steady flow region.
对向定常流区推进的单向波问题给出了解的一级近似和二级近似的普遍表示式；
Venant's differential equations. The general analytical solutions of 1st and 2nd approximations have been given for one directional wave flow which propagates into the steady flow region.
对向定常流区推进的单向波问题给出了解的一级近似和二级近似的普遍表示式；
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