查询词典 perturbation function

In this paper, we study nonlinear perturbation analysis of mesoscale verticalcirculation and evolution equation by means of f plane, non-hydrostatic balance andfilter model. Outstanding nonlinear characteristic of mesoscale disturbance invertical direction, we obtain nonlinear symmetric disturbance equation anddisturbance amplitude s evolution equation by use of multi-scale and singularperturbation technique.

中文摘要：本文采用f平面、非静力平衡、滤声波模式，讨论了大气中尺度非线性动力学方程，通过尺度分析重点突出了扰动在垂直方向上的非线性特征，从而得到了对称扰动非线性方程，运用多重尺度方法和摄动分析讨论了对称扰动非线性重力惯性波的演化过程，得到非线性重力惯性波振幅演化服从广义的非线性Schrdinger方程。

It is very important to understand the effect of oil film reformation and rupture boundary condition on the journal bearing performance when journal, bearing block perturbation and inlet oil pressure exist.

由于轴颈、轴承扰动的作用和进油压力的不同，油膜形成和破裂边界也发生相应的变化，因此有必要研究上述变化对轴承性能的影响。

Oil film reformation and rupture boundary conditions change with the journal, bearing block perturbation and inlet pressure.

由于轴颈、轴承扰动的作用和进油压力的不同，油膜形成和破裂边界也发生相应的变化，因此有必要研究上述变化对轴承性能的影响。

Numerical analysis has been performed to understand the effect of journal and bearing block perturbation, inlet oil pressure on film reformation, rupture boundaries and the static characteristics of bearing.

2分析了轴颈、轴承座扰动和进油压力对边界条件和轴承静特性的影响。

The four Stokes components of brightness temperature and emissivity are solved using the high-order small perturbation method.

该模型基于二维粗糙海面上场的高阶微扰法展开近似，得到了4个发射率分量及亮温的高阶微扰解。

Compared to the semiconductor NCs, metallic NCs as floating gates possesses several advantages, such as larger change of electric capacity, stronger coupling with the conduction channel, a wide range of available work functions, higher density of states around the Fermi level, and a smaller energy perturbation due to carrier confinement.

比较半导体奈米晶体和金属奈米晶体两者，金属奈米晶体作为浮动闸极有许多优点：对於电容特性改变量、较多种可供利用并设计的功函数、在费米能阶周围有高的状态密度以及不易受载子局限效应所引起能阶扰动等等。

In consideration of the nonlinear characters of driving chain, with the general perturbation method, the asympototical solution to the nonlinear dynamic equation of the valve train with multinomial timing cam of symmetrical type is reached in this paper.

本文在考虑到传动键的非线性特性情况下，用普通小参数法求出了具有对称多项式凸轮的配气机构气门的渐近解。

Using the Lagrange varitional method and considering the cross phase modulation as perturbation factor, the characteristic of DMS are synthetically analyzed and studied in wavelength division multiplexing and optical time division multiplexing systems for the first time.

运用拉格朗日变分法视XPM为扰动因子，首次综合解析了WDM和OTDM系统中DMS特性，并利用解析结果对不同的系统进行研究。

The force of low-level frontal zone disturbance is a major factor of the development of middle and low level cyclone. The large center of negative geopotential perturbation inversed by low-level disturbance potential vorticity is located in the front of cyclone providing a favourable condition for the eastward moving and development of cyclone. The high-level system plays a role of indirect force action. The interaction of the development of high-level trough and ridge and low-level frontal zone becomes an important mechanism of the developing of cyclone.

低层锋区扰动强迫是中低层气旋发展的最主要因子，低层位涡扰动反演所得的负位势扰动大值中心位于气旋的前方，有导前现象，为气旋继续东移、发展提供一个铺垫；高层系统起着间接强迫作用，高层槽脊系统的发展和低层锋区的相互作用所导致的斜压扰动成为气旋发展的重要机制。

For physisorption of organic molecules on chemically inert graphite, the interaction between the adsorbates and the substrate was very weak, which provided an opportunity to image the molecules with a minimum of substrate perturbation.

有机分子物理吸附在惰性基底石墨上时，分子和基底之间的相互作用很弱，吸附分子的STM图像反差主要由分子本身的性质决定。

We have something to do in the new stage.

在这段崭新的时期中，我们有一些要做的。

The difference between tourism decision-making under uncertainty and risky tourism decision-making is indistinctive.

其中不确定性旅游决策和风险旅游决策的界线比较模糊，两者的区分是相对的。