扰动

In order to solve this model, perturbation method is employed and the solution is expanded into a series in powers of perturbation parameter.

利用小扰动方法处理了任意形状非均质油藏不稳定渗流问题，将解表达成关于扰动参数的无穷幂级数形式。

In addition, considering the move of equilibrium point caused by parameter perturbation and time delay, the offset of equilibrium point is estimated in order to guarantee that the equilibrium point satisfies the need of design.

另外，考虑参数扰动造成平衡点的摄动，对参数扰动和时滞作用下平衡点的偏移进行了估计，以保证递归神经网络平衡点满足设计要求。

Under the condition of vanishing perturbation, a sufficient condition of the stability of the system is derived.

然后在零扰动情况下，给出了扰动非线性切换系统稳定的充分条件。

After the dynamic response of radial displacement had been obtained in the S2 simply supported condition, the effects of winding angle and thickness on the radial displacement were discussed. By setting the displacement functions as complex Fourier series at the perturbed state, the perturbed motion equations were deduced to a set of Mathieu equations.

对扰动状态的非轴对称变形，位移函数采用复Fourier级数形式，得到了Mathieu形的扰动方程，由此给出了临界载荷和固有频率。

As a result of conservative perturbations, the first order Melnikov function for a perturbed system is identically equal to zero, so the second order Melnikov function has to be considered. The perturbation parameters which make no use in the first order Melnikov function may be important in the second order Melnikov function.

此时一阶Melnikov函数恒等于零，必须考虑二阶Melnikov函数，而在一阶Melnikov函数中不起作用的扰动参数在二阶Melnikov函数中却起着非常重要的作用，因此扰动部分极为复杂。

To overcome the flow fields disturbance difficulties of the regulating valve in flow measurement and test, the fluid disturbance distribution in the pipeline was studied with the pitot tube.

针对调节阀在流量计量及检定中产生的流场扰动问题，采用皮托管对管道中流体扰动的分布情况进行了研究。

The outer bay received little disturbance and the community was most stable. The community belongs to Group Ⅲ that was dominated by polychaete and characterized as complicated and variable. The community change in the central bay was more complicated, concentrated mainly around Maiban Zhou.

该群落的稳定性最差，处于较强烈的扰动之中；稳定分布于湾口的群落Ⅲ稳定性最好，未受到扰动，以多毛类为主，种类组成较为复杂、变化较大；湾中部海域大型底栖动物群落结构变化较为复杂，主要变化区域为马鞭州附近海域。

For the same amount of dredged-material, the preelection area

倾倒同样数量的疏浚物，在预选Ⅰ区引起的地形变化较大，但对水体和海床的扰动范围较小；而在预选Ⅱ区引起的地形变化较小，但对水体和海床的扰动范围较大。

Qualitative analysis of the influence of the strength of anisotropy,dimensionless latent heat,and noise factor on the shape of crystal growth is given.The results show that the velocity of principal branch growth increases as strength of anisotropy increases and the branch structure is very strongly dependent on strength of anisotropy;as ...

结果表明，枝晶主干生长速度随着各向异性强度的增大而增大，并且枝晶结构强烈依赖于各向异性强度；随着无量纲潜热的增大，晶体生长过程中枝晶结构特征愈加明显；扰动对枝晶结构特征有一定的影响，随着扰动因子的增加，枝晶间竞争生长加剧。

At last using ODTR (Optical Time Domain Reflectometer) to measure the attenuation of the Rayleigh intensity at the starting point of fiber, the disturbance and breakage of pipeline is detected, and the location where the optical attenuation occurred is located.

在入射端利用光时域反射技术(ODTR， Optical Time Domain Reflectometer)测量瑞利散射光的损耗变化，检测管道受到的扰动破坏和实现扰动点的定位，进而在破坏的初期即可实现报警。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。