扰动

With the latest NASA model of sea surface topography in 1996, we get the sea geoid.

另外，本文还介绍了利用逆 Stokes 公式和 Hotine 积分求解重力异常和重力扰动的快速算法。

The structure function of residual wavefront phase perturbation compensated by an adaptive optics system has been derived by means of frozen turbulence hypothesis and geometric optics approach.

在采用冻结湍流假设和几何光学近似的条件下，得到了经自适应光学系统校正后的剩余波前相位扰动的结构函数。

The linear model of flight vehicle is the base of GNC system design.

飞行器线性模型是制导与控制系统设计的基础，传统建模方法是利用公式推导，求解力和力矩的导数，确定小扰动方程的系数。

First part: Use a simply wind power system as the discussion and verification of the theory. Study the numerous of factors by flicker emission produced during continuous operation, such as the flicker major source by wind turbine (e.g. wind speed variations, the wind shear and the tower shadow) and grid conditions effect (e.g. short circuit capacity, grid impedance angle). And analyses further that compares SCIG and DFIG , use STATCOM improve SCIG and DFIG is applied to the power system with unstable change load.

第一部分：以一简化风力发电系统作为理论的探讨与验证，研究内容针对风力发电机连续运转下电压闪烁主要来源：风的扰动、风剪切与塔影效应，与来自电力网路的影响：比、短路容量，风力发电电系统中电压闪烁各种因子，并进一步探讨分析 SCIG 与 DFIG 优缺点、以静态同步虚功补偿器改善 SCIG 与 DFIG 运用於不稳定负载电力系统。

The improved e-N method can also yield results well agree with those obtained by DNS.4 The transition prediction for boundary layers on cones with different key parameters such as angle of attack, cone half angle and the Mach number of the coming flow, have been made, to show the reliability of the modified e-N method.5 For the calculation of base flow, boundary layer equations can be used in the case of small angle of attack.

但是它要依赖于对初始扰动的正确预估，这显然又取决于更多飞行数据的积累和分析。e-N方法的转捩预测结果与直接数值模拟得到的结果也吻合较好。4通过对不同来流攻角、不同半锥角和不同马赫数的三维圆锥边界层的转捩位置进行预测，证实了改进的e-N方法对于三维边界层转捩预测是可靠的。5对于基本流的计算，边界层方程可以用于小攻角的情况，其计算量远远小于直接数值模拟，但背风面的剖面不可靠。

In Chapter 2, an autonomous perturbation of a class of planar Hamiltonian systems with homoclinic orbits is discussed.

第二章讨论了一类含有同宿轨的平面Hamilton系统的自治扰动。

This paper analyses the working principle of CFG pile composite foundation and construction technology, especially focuses on the comparison with other piles in construction skills. Aiming at the geological characteristic of haugh in Zhengzhou, the theory of seepage deformation and the pore expanding were applied in the research work of CFG pile impacting the surrounding environment. Then the controlling solution was listed in the paper.

为此，通过对CFG桩复合地基工作机理、施工方法的分析研究，特别是CFG桩与其它桩型施工方法的对比分析(如CFG桩与沉管灌注桩、CFG桩与钻孔灌注桩比较分析)，针对泛滥平原工程地质的特点，运用渗透变形原理、小孔扩张理论等较为深入地研究了CFG桩环境效应，并提出了相应的控制措施，主要研究成果归纳如下：(1)本文提出了针对泛滥平原工程地质单元地区"二元"结构地层，CFG桩长螺旋钻管内泵压施工对周围环境的扰动机理。

The precise location from the perturbanced ring image is an important step for hemispherical imaging and tracking system targeting object.

在半球成像系统实时跟踪目标的过程中，从受到光扰动影响的圆环像中迅速准确地提取圆环的中心是一个关键。

The decomposite-optimized system is discussed by combining the principle of geometric programming and a new view—the comprehensive optimization of hierarchal geometric control in systems is proposed.

在某一个时刻，系统受到未知的扰动，于是使系统从给定的稳定状态转变到另外的已知状态。

Thephase of the meridional component often leads that of the zonalcomponent about /4-/2 (equivalent to 1.5-3 h), resultingin a clockwise hodograph of the wind vector with respect to time.

纬向和经向风的动态Lomb-Scargle谱表明，半日潮是中间层高度上占支配地位的波动，其谱峰对应的频率一般与1/12 c-1有偏离，说明它们经常处在被扰动状态。

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。