查询词典 disturbance

Kanas National Nature Reserve is the unique Europe-Siberian plants and animals region within palaearctic distribution in China and has obvious value of protection and research. Like other forests lied in cold temperate district, natural fire disturbance, one of the most important disturbance factors in taiga, improves continually the succession of forest in Kanas National Nature Reserve.

喀纳斯作为阿尔泰山的一颗璀璨明珠，浓缩了阿尔泰山自然生态系统和景观的精华，保存有以泰加林为代表的原始生态系统，系我国惟一的古北界欧洲-西伯利亚动植物分布区，具有很高的自然保护价值和科学研究价值。

Rapae were almost the dominant species in every sampling sections, even in Shaping Park in which human disturbance was strong, they were more resistable to the disturbance. They should serve as the representative species of urban butterfly.

大绢斑蝶、箭环蝶、苎麻珍蝶、朴喙蝶和波蚬蝶对环境质量要求比较高，因此，它们可以作为环境质量较好的指示物。

Results present that when the lateral-torsional coupling is considered, the responses in the lateral direction of the coupled system subjected to a initial disturbance and a harmonic excitation in the torsional direction, respectively, can be occurred in different forms, and show great effects. However the responses in torsional direction subjected to lateral disturbance and harmonic excitation are slightish.

对系统进行了非线性响应数值计算和相应的频谱分析，结果显示弯扭耦合后，在扭转方向的扰动和简谐干扰扭矩均会以不同的形式在弯曲方向表现出来，并对系统的弯曲振动产生较大的影响；而弯曲振动对扭转振动的影响则要小得多。

The Nash equilibrium problem with l2-nor m bound disturbance was studied. The problem was considered as a compound dynam ic game described by N-person non-cooperative dynamic game and two-person zer o-sum dynamic game. By applying H∞ control theory method, the existence conditions of linear quadratic Nash equilibrium H∞ disturbance attenuati on strategies were presented and proved, and its state feedback Nash equilibrium solutions were given.

研究具有l2范数有界不确定性扰动的纳什均衡问题以具有不确定性扰动的线性二次纳什均衡对策问题为例，将其归结为由二人非合作非零和对策和各对策方与外部扰动的二人零和对策构成的复合对策问题，应用H∞控制理论方法，给出并证明了扰动衰减H∞状态反馈策略存在的条件和求解方法，并通过简例说明了算法的有效性

The results show that for a supersonic shear layer without reaction, a disturbance can make the shear layer become unstable, this results in one vortex or more than one vortex. The combination and seperation of vortex can intensify the mixing. But it is not easy for supersonic reacting shear layer with exotherm to become unstable with disturbance, and the effect duration is very long.

结果表明，对完全气体的超声速剪切层流动，一定的激励方式能使原先较为稳定的剪切层流动变得不稳定，产生单涡或多涡结构，发生多涡间的合并，使混合加剧；但对于存在放热现象的反应超声速剪切层流动，外加激励方式不易使流动从稳定变为不稳定，而且外加扰动的作用特征时间也较长，实际应用前景不乐观。

The causes of the difficulty of CR during open heart surgery with ECC are concerned with the cardiac diseases and other causes, including gas embolism, electrolyte disturbance and acid-base balance disturbance.

ECC心内直视手术中心脏复苏困难的原因与心脏本身病变、气栓、酸碱电解质失衡等因素有关。

This method reserves the disturbance information of signals through superposing a triangle mode on the original signal to localize disturbance.

该方法通过在原始扰动信号上叠加一个三角模态分量来保留扰动信息进而定位扰动。

We examined the relationship between the jet stream and activity of synoptic-scale disturbance Q, which depicts intensity of synoptic-scale disturbance in a period of time, and the relationship between the jet stream and transient eddy heat flux.

通过分析急流与天气尺度波动活动量Q(用于描述某一时间段内天气尺度波动活动强弱程度)、热量涡动输送的关系，发现：在气候平均意义下，天气尺度波动活动量在6、 8月份较大，这意味着在这两个月中，天气尺度波动较为剧烈。

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。

Through the Laplace and Z transformations, it represents the varying features of electromechanical disturbance in a uniform chain network using the family of Bessel functions; the growing or attenuating laws are the same as that of electromechanical wave in a continuum model along the corresponding transmission media. Furthermore, the time of electromechanical disturbance arriving at any bus in the discrete model is also the same as that of electromechanical wave arriving at the corresponding bus in the continuum model.

通过Laplace和Z联合变换，用Bessel函数表示出机电扰动在均匀离散系统中的变化特征，得出扰动的增衰规律与连续体模型中机电波的增衰规律完全相同，而且离散系统中扰动传播到每一条母线所需要的时间与连续体模型中机电波传播到相应母线所需时间也完全相等。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？