扰动

Focusing on the conflict, the relationship between SED and network homogeneousness of power system is studied in this paper. The variation of the network homogeneousness under different dispatch models is analyzed. It is concluded that dispatch mode, transfer capability and its distribution should be considered combining with unification, coordination and compromise, to improve system's ability of withstanding some unexpected accidents.

对此矛盾，针对给定的负荷需求模式，研究SED与电网输电均匀性调度间的关系，分析不同调度方式下对输电能力使用的影响规律，得出输电能力及其分布应与调度方式统一、协调、折中地进行考虑，以提高系统抵御意外扰动的能力。

Since the varies of gun attitude angle and the vertical vector of the homograph plane are one-to-one, all the elements of modulation gun can be transformed into the calculation of the vertical vector angle, which avoids the calculation accuracy loss of the traditional approach under the condition of the tiny attitude angle disturbance.

由于火炮姿态角变化与相应平面的法向量是一一对应的，从而可将调炮诸元转化为法向量夹角来计算，这样可避免传统方案在微小姿态角扰动情形下导致的计算精度可能的损失。

By analyzing the random disturbance series of the classical time series model, the existence of autoregressive conditional heteroscedasticity effect is demonstrated by the Lagrange multiplier test, and the non-satisfaction of homoscedasticity of the classical model is discusse...

通过分析经典时间序列模型随机扰动分量，论证了自回归条件异方差效应的存在性，探讨了经典模型同方差假设不满足的问题。

It is different from the Hoskins potential vorticity theory to explain the positive potential vorticity abnormal in upper level and the positive feedback of cyclone in lower layer which the plateau is a strong warm source that the heating effect is stronger than the warm air advection. The superadiabatic state is frequently appears over the plateau, it would be favorable to the development of the cyclonic circulation.

与Hoskins用位涡思想来阐述高层正位涡异常与低层气旋的正反馈作用不同的是，夏季高原本身是巨大的热源，这种加热甚至比暖平流加热还强；高原上经常出现"超干绝热"现象，这将使得高原上的气旋性环流加强幅度比其他情况下更大；由于高原地形的抬高使得从高原到上层扰动的气层厚度小于Rossby穿透高度HR=fL/。。。

The variation of HST disturbance over tropical Pacific Ocean is related to the moving and change of ICZ and SPCZ over Pacific Ocean.

热带太平洋HST的扰动变化和太平洋的ITCZ和SPCZ的移动和变化也有一定的关联。

However, the solutions of the Cauchy problem of the nonlinear hyperbolic system generally develop singularities in finite time even if the initial data are small and smooth.For this reason, solutions must be found in the space of discontinuous functions. Therefore, one can not directly use the classical analytic techniques that predominate in the theory of partial differential equations of other types. Instead, we construct approximate solutions via the singular perturbation methods. By using the compactness of the approximate solutions, we can obtain the existence of the solutions of original system.

然而一般而言，即使是在初值很小且光滑的情况下，非线性双曲型守恒律的Cauchy问题的解在有限时间内也会出现奇异性，为此，我们必须在不连续函数空间中寻找上述问题的解，因此对这类问题的研究，我们也不可能直接利用在其它类型的偏微分方程中占主导地位的解析方法来解决问题，而是通过奇异扰动法构造近似解，由近似解的紧性得到原问题解的存在性。

That great advantage the theory has over linear or nonlinear systems is that system state trajectory moving in the sliding or switching hypersurface have invariability, insensitivity or adaptivity in the presence of internal parameters or system model uncertainties and external perturbances.

这个理论对线性或非线性系统的最大优势是当面临内部参数或系统模型不确定及外部扰动时系统状态轨迹在滑动面或开关超平面上的运动有不变性、不灵敏性或自适应性。

The anti-integrable limit theory is much simpler than the KAM theory since it is just obtained as a variation of the standard implicit function theorem.

近年来提出的反可积极限理论是研究完全混沌系统的扰动。

C Ensemble prediction made by the new method of CNOP has higher reliability than that by SV in the medium range by the analysis of spread/skill relations and Talagrand diagrams.

采用T21L3斜压准地转模式，从扰动的初始模态及其发展两个方面比较了CNOP与SV的异同，揭示了非线性对可预报性的影响。

The free-surface or interfacial waves due to a submerged body in an incompressible fluid are investigated by the methods of integral transform and asymptotic analysis.

运用积分变换和渐近分析方法研究不可压流体中潜体生成的扰动在流体自由面或界面远场上的波动效应。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。