查询词典 instability

After being compared and analyzed, asphaltene deposition model s can be classified as the ones based on phase splitting and colloid instability.

在对比分析的基础上，将沥青沉积模型划分为基于相劈分的沥青质沉积模型及基于胶体不稳定性的沥青质沉积理论模型，指出了各模型的局限性及其存在根源。

By analyzing the distribution of the zeros to the transcendental characteristic equation associated with the trivial.solution,we obtain some- sufficient conditions on the stability and instability of the trivial solution.These results are generalized to n-unit neural networks by means of space decomposition in this Chapter.

在第二章中，我们讨论了不带自反馈与带自反馈的3元环状神经网络系统平凡解所对应超越特征方程的根的分布情况，确定了系统平凡解稳定与不稳定的充分条件，并利用空间分解的方法把相应的结果推广到n元环状神经网络系统。

It is precisely his nomadic experience that gives Zhang KeXin the ability to audaciously utilize colors and images in his esthetic and technique an ability to survey, analyze and display the chaos and instability inside the movements of the new Asia - from a "Pan Asian" point of view.

正是由于张可欣的游牧经验才使他的艺术不仅在技术美学上大胆使用颜色和图像，而且还在思想上从泛亚洲的视角审视、分析和表现亚洲内部动态的混乱和混杂，并牢牢把握住亚洲处于动荡、不安、焦虑、欲望的文化表征。

The common method, that all strong-correlation terms of the model are eliminated, can bring the loss in the engineering application, so the new method is proposed that the identified model reserves some correlation. The augmented matrix A is constructed by the outputΔW and the matrix S. The"determinating order based on ratio of determinant"is brought out to screen the strong-correlation terms in the structure identification. The latent root estimation is improved in screening the eigenvalues and eigenvectors. Thus the estimation precision is improved greatly.The consistence check of guidance instrument error coefficients of flight test and ground test is the purpose of flight experiment. The causes of inconsistency of the two models are analyzed. The hypothesis test of linear regression model based on F statistics is proposed to check the consistence.Finally, the instability of error coefficients is probably caused by the change of the flight environments, therefore, the relation between the error coefficients and flight environment is analyzed. The approach is presented to identify SINS guidance instrument error models and compensate the error in the segmented sections corresponding to the change of vertical acceleration of aircraft.

在结构辨识中，常用的方法由于将模型中的强相关项全部剔除而给工程应用带来损失，因此，本文提出了新的有益思想，即在保留一定相关性的基础上进行辨识：将输出向量ΔW与环境函数矩阵S构成增广矩阵A，然后采用"比定阶行列式"来剔除相关向量的方法，这样既可以尽可能多地保留了对落点影响大的强相关参数，又可以对落点影响小的强相关参数给予剔除；在参数估计中，改进了特征根估计中特征根和特征向量的筛选方法，提出"近零"准则，从而大大提高了参数估计的精度；再者，鉴于天地模型"一致性"检验是飞行试验和SINS制导工具误差系数分离的主要目的，因此，本文又深入分析了造成天地模型不一致的原因，提出了采用基于F统计的线性回归模型假设检验方法来进行捷联制导工具误差模型的天地"一致性"检验；最后，鉴于飞行环境剧烈变化可能会对惯性仪表误差系数稳定性带来一定的影响，因此本文深入地分析了SINS制导工具误差系数与外界环境的关系，提出了基于过载变化大小的分段辨识和分段实时补偿的算法。

In the second part, the yan jingxiang shuangtongliang model for radiation and the linear time perturbation theory are used in this paper, and the helical magnetic instability is analysed in an axial magnetic field.

第二部分：采用沿径向双通量辐射模型和与时间有关的线性微扰理论，讨论了在轴向磁场中影响电弧螺旋不稳定性的一些因素。

The simulation results show that the vector control system based on this improved scheme has better dynamic and static performance. It solves a lot of problems such as larger error in the MRAS based on the back electromotive force when the motor runs across the zero speed and the instability based on the instantaneous reactive power in the regenerating mode and has high estimating precision.

仿真表明基于该方法的矢量控制系统动静态性能好，能有效解决反电动势模型参考自适应方法在速度过零点辨识误差大以及瞬时无功功率模型参考自适应方法在转速给定为负阶跃时转速不稳定问题，转速估计精度高。

We found that it is the effect of odd-order term of f which describe the total energy collocation between forward wave and backward wave that causes the difference of modulation instability between normal dispersion region and abnormal dispersion region.

第三，根据增益谱的比较，我们从色散关系式中看到了产生这种变化的原因。正是由于存在f奇次项的影响而导致了这种在正常色散区和反常色散区变化趋势的不同。

Look from historical condition,; of economic technology instability looks from external environment, the infrastructure such as traffic, communication, irrigation works is backward, invest good environment difference, return rate is low.

从历史条件看，经济技术基础薄弱；从客观环境看，交通、通讯、水利等基础设施落后，投资硬环境差，回报率低。

In Matsuo Basho's and Yasushi Inoue's works and Record of Great Peace, the image of Zilu remains the original one in Chinese historical classics. But in Disciples, a novel by Nakajima Atsushi, Zilu shows conspicuously the transmutative features in the Japanese literary circle, which is related with the writers and the social instability, and also closely related with The Records of the Grand Historian.

如松尾芭蕉、《太平记》和井上靖等，这些作家作品笔下的子路保持了中国历史典籍里的原貌，但是中岛敦的小说《弟子》中的子路却突显出其在日本文学圈里的变异特色。

In Matsuo Basho's and Yasushi Inoue's works and Record of Great Peace, the image of Zilu remainsthe original one in Chinese historical classics. But in Disciples, a novel by Nakajima Atsushi,Zilu shows conspicuously the transmutative features in the Japanese literary circle, which is related with the writers and the social instability, and also closely related with The Records of the Grand Historian.

如松尾芭蕉、《太平记》和井上靖等，这些作家作品笔下的子路保持了china中国lishi历史典籍里的原貌，但是中岛敦的小说《弟子》中的子路却突显出其在日本文学圈里的变异特色。

You'll be in trouble it you don't watch out .

如果你不注意，你会有麻烦的。

Shaped like a biconvex lens.Of, relating to, or having the form of a hyperbola.

双曲线的属于双曲线的，与之有关的，或有双曲线形状的