扰动

Using Landsat TM data, based on the spectral character analysis of main land-use types, different feature models under strong land disturbance in Antaibao opencast coal mine were set up. Vegetation higher cover area, vegetation lower cover area, denudation and cumuli area, excavation and transport area and slope area in Antaibao were extracted. The information of areas with higher vegetation cover and lower vegetation cover were detected by NDVI (normalized difference vegetation index).

该研究利用Landsat TM数据，以安太堡大型露天煤矿为例，在对地物光谱特征深入分析的基础上，设计了大型露天矿区土地剧烈扰动下不同地物特征提取模型，提取了安太堡露天矿区植被高覆盖区、植被低覆盖区、剥离堆垫区、采煤运煤区及边坡区等不同地物信息。

By use of measured data in situ,the deformability and hydraulic properties are studied by numerical analysis methods.

进行了隧道开挖卸荷的有限元模拟计算，讨论了开挖方法对围岩扰动带的影响。

Again, the sankharas are divided into the meritorious, demeritorious, and "imperturbable," i.e., the volitions present in the four formless meditations.

诸行又被分为福行、非福行、以及&不可扰动&──即四类无色界禪定中的存在意志。

A disturbance to simulate fluctuations at the interface is added to simulate the growth of secondary and third dendrites.

研究了不同过冷度和各向异性系数等相场参数对枝晶生长的影响，最后采用加入非平衡扰动的方式，进行了二次及三次枝晶生长的模拟。

It is observed that the strong correlations in the coding regions may be blocked by the third base of codons,and the proper masking can extract the correlations.Distribution of dimeric tandem repeats of unmasked sequences is also compared with that of masked sequences.

结果表明构建得到的网络同时满足小世界网络和无尺度网络的特征，证明DNA序列不全是随机的序列，而是有随机扰动的确定结构的序列，特别是编码区。

Monte Carlo simulation is one of effective ways to get this kind of dosimetric parameters. In this paper, the absorbed doses at the central axis in different phantoms with inhomogeneity media and finite sizes for small field size beams were simulated with Monte Carlo code system EGSnrc, respectively.

本文利用蒙特卡罗方法模拟计算了临床上常用的点源光子束在有限宽非均匀模体中的沉积能量，研究了不同射野条件下中心轴上的剂量分布，并用剂量扰动因子定量分析了剂量增强或减弱效应的强度。

When drilling with the new water-saving technology, the surface water almost will not be consumed, the strata not be disturbed and the drill penetration rate can be enhanced greatly, showing a nice future applied in droughty and water lack area.

该节水钻探新技术在钻进过程中基本不消耗地表水，且不扰动地层，并能显著提高机械钻速，在干旱缺水地区具有广阔的应用前景。

In this thesis, the stead hydrodynamic performance of ducted propeller in uniform flow is predicted by lifting-surface method and surface panel method.

本文应用基于扰动速度势的面元法和升力面理论的耦合方法，计算导管螺旋桨在均匀流场中的定常水动力性能。

The controllers has considered all sorts of imperceptible factors affecting the servo performances in a LPMSM servo system, which include the parametric uncertainties brought by the changes of the mobile mass, the dynamitic performance of the system and the size of input.

针对非线性控制器设计参数较多这个问题，本文将参数设计问题转化为一种优化设计问题，借助于寻优方法中最为有效的遗传算法，可以比较方便的找出符合设计要求的一组调节参数，来解决模型摄动和参数不确定性给系统带来的扰动，以保证系统的稳定性及鲁棒性。

In the theoretical investigation, we calculate the static load-deflection curves and the longitudinal forces transmission for a specified angle difference between the fixed clamp and the moving clamp. To study the stability of the equilibrium configuration, we superpose the equilibrium configuration with a small perturbation and calculate the natural frequencies of the deformed elastica. In addition, the condition where two ends with identical angles are introduced will be researched.

在理论分析方面，针对几种不同的固定夹持端与滑动夹持端之夹角，计算出静态的受力-变形曲线以及轴向力传递关系；为了探讨平衡位置的稳定性，在平衡位置加上微小的简谐扰动，然后计算出弹性板条受力变形后的自然频率；此外，对於两端角度相同的情形，将有更深入的研究。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。