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1)  analytic perturbations
解析摄动
2)  perturbation solution
摄动解
1.
perturbation solution of the flow in curved annular pipe with small curvature;
环形截面小曲率弯管内粘性流动的摄动解
2.
The computation for both creatinine and urea show that the perturbation solution is not only simple but also accurate enough and is a good substitute for the more exact analytical solution.
提出了细胞外室体积随时间变化的两室模型并求出了其摄动解。
3.
The first order perturbation solution of the characteristic value and the characteristic function in the bending vibration problems of bridge structures has been deduced by means of the perturbation methods.
利用摄动法,导出了桥梁结构弯曲振动问题中特征值和特征函数的一阶摄动解。
3)  perturbation analysis
摄动分析
1.
The perturbation calculation method avoids the modal truncation errors caused by the FEM-based matrix perturbation method,thus enhancing the accuracy of perturbation analysis results.
该方法在用于一维结构系统动力响应问题的摄动分析时,不需要按振型展开,避免了基于有限元的矩阵摄动方法所带来的模态截断误差问题,提高了分析结果的精度。
2.
The buckling and post-buckling of a unilateral constrained circular plate subjected to edge thrust and lateral pressure is presented using the perturbation analysis and the shooting method.
利用摄动分析结合打靶法,分析了具有单侧表面约束的圆板,在面内压力与横向力联合作用下发生屈曲和过屈曲问题,得到了在一系列横向力作用下周边固支和简支圆板的过屈曲路径。
3.
A new algorithm based on the perturbation analysis method for Window now control incomputer communication networks is described.
建立了一种基于摄动分析方法的窗口流控新算法,给出了各种负载条件下的仿真实验结果。
4)  infinitesimal perturbation analysis
摄动分析
1.
Based on no-preemptive priority queuing network model,new infinitesimal perturbation analysis schemes were presented to estimate the dynamic time performance of DMS based on Common Ojbect Request Broker Architecture(CORBA) and Dimensional Measurement Interface Standard(DMIS).
针对基于公共对象请求代理结构和尺寸测量接口规范的分布式测量系统,根据多用户非抢占优先排队网络静态性能模型,提出基于无穷小摄动分析的分布式测量系统动态性能评价算法。
2.
Based on the no-preemptive priority queuing network model and infinitesimal perturbation analysis theory,the partition schemes of sample paths are proposed.
针对基于CORBA(Common object request broker architecture)和尺寸测量接口标准(Dimensional measurement interface standard,DMIS)的分布式测量系统(Distributed measurement system,DMS),根据多用户非抢占优先排队网络静态性能模型,提出基于无穷小摄动分析的样本轨道划分方法,建立测量系统服务窗口的动态调度算法,实现测量系统的时间性能调优。
3.
Based on no-preemptive priority queuing network model and infinitesimal perturbation analysis schemes,new dynamic scheduling algorithm is presented.
针对基于CORBA和DMIS的分布式测量系统,根据多用户非抢占优先排队网络静态性能模型,提出基于无穷小摄动分析(Infinitesimal Perturbation Analysis,IPA)的分布式测量系统服务窗口动态调度算法。
5)  analytical photography
解析摄影学
6)  singular perturbation solution
奇异摄动解
1.
The singular perturbation solution for a class differential equations with turning points is discussed by the transformation of Goldstein.
应用Goldstein变换法研究了具有转向点的一类微分方程的奇异摄动解,避免了前人对此类微分方程求解时出现的悖论以及用变分运算确定任意常数的复杂性。
2.
With the method of non-linearity scale, the singular perturbation solution for a class of two order different equations is discussed, involving small parameter in the two order derivative.
利用非线性尺度法讨论了在高阶导数含有小参数的一类二阶微分方程的奇异摄动解。
补充资料:长期摄动
长期摄动
secular perturbation 

   天体在运动过程中,除了受中心主天体的引力作用外,还受到周围其他天体、介质等等诸多因素的作用,这些作用与中心体的引力相比是很小的,因此称为摄动。天体在摄动作用下,其坐标、速度或轨道要素都产生变化,这种变化成分称为摄动项。长期摄动是指天体的坐标、速度或轨道要素的摄动量中随着时间而单调增加或减少的部分,又称长期摄动项。长期摄动反映了天体运动轨道随时间演化的粗略规律,对于研究天体的演化过程和整个力学系统的宏观图像和稳定性有很重要的意义。18世纪以后,许多天体力学家都在研究大行星的运动轨道是否有长期摄动,并且证明,在精确到一阶、二阶小量的情况下大行星轨道大小不会有长期变化。人造天体运动理论中,长期摄动的存在与否是直接影响人造天体寿命的重要因素,例如由于地球大气阻力的长期摄动存在,可能导致人造地球卫星的轨道逐渐变小,最终落入大气层而坠毁。
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