Routh criterion", The Routh criterion can be used on low order systems ."
罗斯准则可使用在低阶系统上。
Computation results show that the low order modes take main effect in sound radiation.
数值计算结果表明低阶模态对壳体声辐射起着主要作用。
Sound radiation analysis of low order modes from the ring-stiffened cylindrical shells in fluid medium;
对流场中一无限长周期环肋圆柱壳受激振动的辐射声压进行了理论和实验研究。
The basic idea of WENO is to obtain a higher approximation by a linear combination of low order numerical fluxes.
WENO格式的主要思想是通过低阶的数值流通量的凸组合重构得到高阶的逼近，并且在间断附近具有本质无振荡的性质。
The operator is characterized by low order equation, imaging for steep dip and adapting for any changes in velocity field.
该算子具有方程阶数低且能对陡倾角成像的特点，能适应速度场的任意变化。
Finally, the problems can be reduced to solving a low order system of algebraic equations like the initial parameter algorithm.
问题最后和初参数算法一样能归结为求解一个低阶代数方程组。
The new method overcame the deficiency of artificially selecting the truncated functions in the classical low order spectral model.
克服了应用低阶谱模式研究物理现象时选取截断函数时的主观任意性。
This product has a low order of toxicity, and no special precautions are necessary in handling other than standard industrial protection.
此产品毒素含量低，处理时除常规工业防护外无须特别的预防措施。
When a high order controlled plant contains several small time constant inertia units, it can be simplified to low order time-delay system.
一个高阶被控对象含有几个小时间常数惯性环节时，可简化成低阶时滞系统。
Assessing the handling qualities of military aircraft, it requires using a low order equivalent system to substitute for the high order aircraft system.
评价有人驾驶飞机的操纵品质，要求将高阶飞机系统用一个动态特性等效的低阶系统来代替。
PWM AC servo motor is normally a nonlinear control object of high order. In this paper it is simplified as a linear object of low order with variable parameters.
PWM交流伺服系统是一个高阶非线性对象，本文把它简化处理为低阶变系数线性对象。
In this paper, based on the second generation low order panel method, a computational method of potential flow around wings under high-lift configuration is given.
本文采用第二代低阶面元法给出了一种高升力外形下机翼的位流计算方法。
This method has high precision and can avoid the shortcomings of long time testing and only for fixed structure low order models that most relay identification methods do.
该方法辨识精度高，同时可以有效避免大多继电反馈辨识方法测试时间过长及只能辨识固定的低阶模型的缺点。
The study shows that the satisfied results can be obtained using an appropriate vehicle model, even if the low order controller and the general control strategy are adopted.
研究结果显示：当选择合适的汽车模型，即使采用低自由度控制器及其常规的控制方法，也能得到令人满意的结果。
A frequency domain technique is presented to be used in speech coding to improve the performance of low order linear prediction (LP) in modeling of formants of voiced speech.
讨论了一个用于语音编码的频域技术，用以在浊音语音共振峰模型方面改善低阶数线性预测(LP)的性能。
The result makes it clear that wall-pressure fluctuation can be described with the method of proper orthogonal decomposition, and the low order approximation is very efficient.
计算结果表明脉动壁压可用正交分解进行描述，而且对其进行低阶近似颇为有效。
In this article, we discussed generalized methods for solving the beam eguilibriurr equation with low order terms, analysed stability, convergence and uniqueness of the solution.
讨论了带低阶项的梁的平衡方程的广义解法，分析了解的稳定性、收敛性和存在唯一性。
High order guided mode in double metal-cladding waveguide is more sensitive to the refractive index variation of the polymer guiding layer by comparing with low order guided mode.
双面金属包覆波导高阶导模对聚合物薄波导层的折射率变化比低阶导模更敏感。
This paper performs one-way wave decomposition for 3d wave equation, and 2 kinds of high approximation of up-going wave equation in low order differential equation system are derived.
对三维波动方程做单程波分解，给出了用低阶偏微分方程组逼近上行波方程的2种高阶近似表达式。
Using a low order, two-layer baroclinic quasi-geostrophic model, a nonlinear system including the interaction between a thermal forced wave, a transient wave and zonal flow is studied.
本文利用两层斜压准地转模式，在低谱简化下，得到一个热力强迫波，瞬变波与纬向气流相互作用的非线性方程组。
Large amplitudes of cables can be induced by low order frequency harmonic oscillations. Then, some destructive accidents will happen, and some efficient control methods will be needed.
缆索结构系统在外部激励作用下将产生低频谐振，会导致大的振幅而可能有破坏性事故发生，故需要一种有效的方法控制这种振动。
In this paper, the contribution of high order mode shape to the frequency response function of disproportional damping structure is expressed by using low order mode shape and system matrix.
本文用低阶模态和系统矩阵表达高阶模态对非比例阻尼结构频响函数的贡献。
It can be said that the status society is a high and low order rank society, the status is the privilege origin and the symbol, the status is different, the legal status is also totally different.
可以说，身份社会是一个尊卑有序的等级社会，身份乃是特权的来源和标志，身份相异，法律地位也就迥然不同。
On the basis of hybrid error model and adopting diminution order method by filter, an adaptive control scheme of hybrid model has been designed for high order system following the low order model.
基于混合误差模型，采用滤波器降阶的方法，设计了一种高阶系统跟踪低阶参考模型的混合模型参考自适应控制方案。
It is indicated by a numerical simulation of the cantilever flexible shear structural damage identification that only low order modal parameters are needed to identify effectively a structural d...
通过一个悬臂弯剪型结构损伤识别的数值模拟表明，只需低阶模态参数就可有效地识别结构损伤。
The results show that the eigen spectral functions declined with the increasing of order rapidly. The reconstruction of spectral density function shows that low order approximation is very efficient.
计算结果表明，冲击射流所形成的脉动壁压场可用正交分解进行描述，其特征谱函数随阶数的增加而迅速衰减，对谱密度函数进行低阶近似也非常有效。
The invention provides methods for designing ophthalmic lenses, and lenses produced by this method, which lenses corrects both low order and high order wavefront aberrations of the lens wearer's eyes.
本发明提供设计眼镜片的方法以及由该方法制备的眼镜片，所述镜片校正所述镜片的佩带者眼睛的低阶和高阶波阵面像差。
The invention provides methods for designing ophthalmic lenses, and lenses produced by this method, which lenses corrects both low order and high order wavefront aberrations of the lens wearer's eyes.
本发明提供设计眼镜片的方法以及由该方法制备的眼镜片，所述镜片校正所述镜片的佩带者眼睛的低阶和高阶波阵面像差。
应用推荐