导出方程

By the analysis of dive and horizontal plane nonlinear model, the catastrophe model on de dive plane is deduced, and catastrophe stability is analysized. In the horizontal plane, simplified equation is gained by center manifold theory, then draws the conclusion that the stability of limit circle arises from critical point is relate to small difference of move point and critical point.

通过对潜艇垂直面和水平面非线性运动模型进行分析，导出垂直面运动的突变控制模型，并进行了突变稳定性分析；在水平面运动的非线性分析中，通过中心流形定理简化方程，得出临界点处极限环的稳定性与微差占的符号有关的结论，这样在无法或很难得到李亚普诺夫函数的情况下，可以通过这种方法判别临界点的稳定性。

We transfer the location problem into solution of a non linear pro-gramming problem.from which an integral equation is obtained.

此外，本文讨论了G/M/1最优服务员的设置问题，并将其转化成为非线性规划问题的求解，并对从中导出的积分方程的解做了初步的探讨，给出了寻找最优设置的途径。

In this paper, applying an integral expression of linear viscoelastic theory, several integral equation expressions for obtaining shear modulus G from stress relaxation modulus E{t and bulk modulus K are acquired by using inversion of the Laplace Transform.

本文应用线粘弹性理论的一种粘弹性积分变换式，采用拉氏逆变换，导出了由拉伸松弛模量E和体积松弛模量K求解剪切模量G的几种积分方程，并给出了由已知试验数据E和K通过迭代和数值积分求G的数值积分算法。

The observational equations have been derived using the three methods above which are based on high-low SST and low-low SST observational data respectively, at the same time, the shortages and merits of these three methods are analyzed. 3The problem of gravity field recovery can be attributed to the solution of over determined system of equations.

本文分别以高低卫卫跟踪和低低卫卫跟踪观测数据为基础，导出了基于上述三种方法的观测方程，并分析了它们的优缺点。3重力场恢复最终归结为超定线性方程组的求解问题。

The equation of magnetic line of force for current element is derived and the concluion is obtained that any magnetic line of force is a close circle and its center changing in straight line on three coordinate plane, the oblique rate is determined by current element.

导出了电流元的磁力线方程，发现任一磁力线是一闭合圆线，圆心在三个坐标平面上沿直线变化，斜率由电流元的取向决

A unified model is established to investigate dynamic interactions between major locomotives fypes and the track.

文中建立了主要类型的机车－轨道统一模型；导出了弹性及刚性轴悬式电机驱动机车动力学微分方程；采用新型。。。

In addition, in the solution set of corresponding equation, the expression of the optimalapproximation solution to given matrix is derived.

另外，导出了在线性流形上矩阵方程的解集合中与给定矩阵的最佳逼近解的表达式。

In addition, in the solution set of corresponding equation, the expression of the optimal approximation solution to given matrix is derived.

另外，导出了在矩阵方程的解集合中与给定矩阵的最佳逼近解的表达式。

A differential equation describing this stochastic process is derived, and a statistical distribution function of microcrack size is obtained.

本文导出了描述这种随机过程的微分方程，利用微裂缝形成长大的位错机理，解出了微裂缝大小的统计分布函数。

The paper has calculated equation of the generating curve of minimal surface of revolution by the approach of analysing.

用分析的方法导出了极小旋转曲面的生成曲线的方程。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。