查询词典 instability

Introduces how to prevent and emendation control the voltage instability program of electric power system using the indicator of voltage instability in detail.

详细介绍了利用电压不稳定指示器来预防与校正控制电力系统中的电压不稳定性问题。

Falsework instability damage to the damage from the elastic stability of the instability that features (refer to the critical buckling load, and modal) is a limit on the basis of capacity.

模板支架的破坏为失稳破坏，由弹性稳定性分析得出的失稳特征是研究极限承载力的基础。

I think the instability in the Middle East as a direct result of the instability in the region.

我认为中东的不稳定直接造成了这个地区的不稳定。——2002年

According to the analysis of compression instability, a new kernel function is proposed which can remove the instability effectively.

本文在分析出现压缩失稳现象原因的基础上，提出了一种新的核函数，消除了压缩失稳现象。

Based on the nonlinear dispersion relation of electromagnetic wave in relativistic plasma, the nonlinear controlling equation for linearly polarized mode is obtained using Karpman's method. The modulation instability of intense laser pulse propagating through relativistic plasma is analyzed and the modulation instability growth rate as a function of perturbation wave number for laser beam propagating through relativistic plasma is given.

从相对论等离体中电磁波的非线性色散方程出发，利用Karpman方法获得了线性偏振波模所满足的非线性控制方程，在非线性色散方程和非线性控制方程的基础上对线性偏振激光在相对论等离体中传播的调制不稳定性进行分析，给出了调制不稳定的时间增长率与扰动态波数之间的函数关系。

The research of pressure hull buckle in this paper is to evaluate the global buckle strength. When we discuss the general instability, not only calculate the eigenvalue but also analyse non-linear buckle. At last, we consider the practical material properties to realize the general instability behavior.

本文在压力壳挫曲强度的研究上，主要是针对整体结构之挫曲破坏，在讨论结构之挫曲行为时，除了求解挫曲特徵值，更进一步考虑非线性挫曲，并探讨材料塑性行为对结构挫曲强度的影响，以了解压力壳材料发生挫曲时之实际行为。

A high frequency secondary instability mode is detected, which rides on the primary instability wave in time domain and appears at the inflectional point of mean streamwise velocity profile.

结果表明，高频二次不稳定性在时域上表现为骑在基频波的特定的相位区域。

The results show that the quintic nonlinearity plays a role similar to the case of neglecting the group-velocity mismatch in modifying the modulation instability, namely, the positive and negative quintic nonlinearities can still enhance and weaken the modulation instability, respectively.

结果表明，五阶非线性对调制不稳定性的影响与忽略群速度失配的情形是类似的，即正负五阶非线性分别能够增强和减弱调制不稳定性。

This text proceed with the theory of the vibration, utilize typical elastic hinge law analyze structure dynamics characteristic when the blade is quivered to instability, and then use relevant knowledge of blade vibration to simplify the model and the aerodynamic force of the vibration. Through the simplification, we can get the equation of the blade, which is dispersed to its instability. Then VISUAL BASIC procedure is utilized to work out thecharacteristic value of vibration and the vibration frequency. At last comparing the result which is calculated by the above-mentioned theory formulae with the result which is calculated by internationally agreed procedure ANSYS to verify the accuracy of the formula of reduction.

本文从振动理论入手，利用最为典型的弹性铰链法分析叶片发生颤振失稳时的结构动力学特性，然后对振动模型及振动时所受的气动力进行简化，利用简化方程得到叶片发生发散失稳时的振动方程，利用编制的VISUAL BASIC程序解出振动的特征值并得到振动频率，最后分别通过上述的理论公式和国际通用的有限元程序ANSYS对风力机叶片模型进行发散失稳时的频率计算，验证简化公式的准确性。

Foreign capital facilitate the saltant development of regional economy,however,the low efficiency and instability of foreign enterprises lead to the limitation and instability of independent innovation and upgrade of industrial structure in regions where foreign capital is principal part,and the potential of sustainable development in these regions is uncertain.

但由于外资企业投资上的低效率性和游移性，致使以外资为主体经济成分的地区自主创新和产业结构升级具有局限性、不稳定性，其可持续发展潜力与能力也具有不确定性。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。