1) unstable manifold
不稳定流形
1.
A simple form of the unstable manifolds for the fixed points not being on the boundary;
不是边界点的不动点的不稳定流形的简化形式
2.
Algorithms for computing 1 D unstable manifolds of maps
离散系统一维不稳定流形的数值计算方法
3.
Aim To study singular points, closed orbits, stable manifolds and unstable manifolds of a second order autonomous Birkhoff system.
目的研究二阶Birkhoff自治系统的奇点、闭轨、稳定流形与不稳定流形，方法用常1微分方程的定性方法进行研究，结果与结论给出二阶Birkhoff自治系统的奇点判据、闭轨判据、双曲平衡点判据，得到与其相关的平衡稳定性、稳定流形与不稳定流形等。
2) stable manifold and unstable manifold
稳定流形和不稳定流形
3) invariant stable manifold
不变稳定流形
4) Unstable flow
不稳定流
1.
Through computation on runoff regulation incorporated with flood control and water benefit promoting,computation on power balance of Guangxi power grid,analyzing of cost of power system,as well as calculation of downstream unstable flow, 540 MW is selected to be installed in the station.
百色水利枢纽是一座以防洪为主，兼有发电、灌溉、航运、供水等综合效益的工程，通过兴利与防洪结合的径流调节计算，广西电网的电力电量平衡计算，电力系统现值费用计算，以及电站下游不稳定流计算，最后选定电站的装机容量为５４０ＭＷ。
5) transient flow
不稳定流
1.
This paper discusses the theoretical solution to the transient flow of the urban high-pressure gas pipeline network with the numerical method of partial differential equations and the Newtonian methods,using Visual C++ to have a program of the pressure distributing with the change of consumer charge in the high-pressure gas pipeline network.
采用偏微分方程特征线的数值分析及解非线性方程牛顿迭代法,对燃气高压管网不稳定流动问题从理论上进行了求解,并用Visual C++编制了用户负荷随时间变化时高压管网压力分布的动态模拟程序。
2.
This paper discusses the calculation method of transient flow with constant temperature for high-pressure gas pipeline based on characteristic line, considering friction term, inertia term and gravity term.
对高压燃气管道考虑了摩擦项、惯性项、重力项的等温不稳定流动,用特征线法的计算方法进行了探讨。
3.
Analytic solution of transient flow in gas transmission pipeline are obtained by separation variable method, and distribution function of pressure and flow in gas transmission pipeline are defined.
用分离变量法求出了燃气长输管道不稳定流的解析解,得出了长输管线压力、流量的分布函数。
6) unsteady flow
不稳定流
1.
Study on Short-term Optimal Scheduling and the Influence of Unsteady Flow on Navigation of Three Gorges Cascade;
三峡梯级短期优化调度与航运的不稳定流研究
2.
The discharge calculation coefficient k,x can be used to the discharge calculation under the condition of fixed numerical value,solves some special demands in water power planning and design and similar calculation of unsteady flow in the pondage water power station.
马斯京根法流量演进系数K,x,在数值不变的条件下应用于河段短时段的流量演算,解决了水利水电工程规划设计中的一些特殊要求和水电站日调节不稳定流演进的近似计算问题。
3.
Thus,some special demands in water conservancy and hydroelectric design as well as the approximate calculation problems of unsteady flow for daily-regulation hydropower station are resolved.
按长时段推求的马斯京根法流量演进系数K,X,在数值不变的条件下应用于河段短时段的流量演算,解决了水利水电工程规划设计中的一些特殊要求和水电站日调节不稳定流演进的近似计算问题。
补充资料：三角形稳定性
Image:11733384738558800.jpg
三角形稳定性
只要三角形三边的长度确定，这个三角形的形状和大小就完全确定，这个性质叫做三角形的稳定性。
证明:
任取三角形两条边，则两条边的非公共端点被第三条边连接
∵第三条边不可伸缩或弯折
∴两端点距离固定
∴这两条边的夹角固定
∵这两条边是任取的
∴三角形三个角都固定，进而将三角形固定
∴三角形有稳定性
任取n边形(n≥4)两条相邻边，则两条边的非公共端点被不止一条边连接
∴两端点距离不固定
∴这两边夹角不固定
∴n边形(n≥4)每个角都不固定，所以n边形(n≥4)没有稳定性
说明：补充资料仅用于学习参考，请勿用于其它任何用途。