查询词典 characteristic equation

According to the function of the structure and the mechanics characteristic of the building, the principle of break melt safely destroy is presented by analyzing every possible destroyed patten of the structure with a framewok. According to the document 1, in this paper the stability calculating equation of accessorily built air raid basement with a framework under the load of shock wav...

根据建筑物的结构性能和力学特点，针对框架建筑在冲击波作用下的各种可能破坏形态进行分析，提出&断融安全破坏&原则，依据罗文豹提出的核爆炸冲击波作用下高层建筑防空地下室的稳定性分析[1] ，建立框架结构下的附建式防空地下室在冲击波荷载作用下的稳定计算方程，提出结构构造措施。

Considering pencil of matrices with centrosymmetric could not satisfy characteristic equations in practice, it was necessary to study the centrosymmetric solution of the matrix equation least square problems, and to give pencil of matrices with centrosymmetric of the least squares problems in model updating.

对线性结构的有限元动力模型修正问题，通过灵敏度分析，确定要修正的参数，由正交性条件和特征方程得到相应的修正量方程。

The electro-optic effect utilizing the change of a light scattering by transition between wound and unwound states of the helicoidal structure characteristic of ferroelectric liquid crystal shows a low threshold field and a short response time in range of EMBED Equation .

在电场作用下液晶的螺旋态和螺旋展开态之间的转换，由此引起光散射的变化所产生的电光效应，其阈值电场极小，并与盒厚和温度有关，响应时间在μs级

In this paper, the generator model of constant transient voltage and the invariableness impedance model was used, and the saliency of generator is included; through the analysis of the characteristic of the network equation calculation in the transient stability analysis, a new node ordering algorithm is proposed. Better initial value can accelerate the convergence rate of the networking equations, reduce the number of iterations, thus to cut down the amount of calculating time.

本文首先建立了适合于暂态稳定分析的简单模型，其中发电机采用E_q恒定模型，考虑了发电机的暂态凸极效应，负荷采用恒定阻抗模型；研究了电力系统的暂态稳定分析方法，指出目前数值积分暂态稳定计算方法中存在的不足，主要是网络方程的求解速度过慢；分析了暂态稳定计算中网络方程的特点，将稀疏技术应用于网络方程的求解，提出了一种新的节点编号方法——最小度最小有源节点道路集算法，减少了网络方程的计算量；在进行交替迭代求解时，将预测算法应用于每一积分步网络方程功角和电压的初值估计当中，应用自回归算法和广义延拓算法，期望给出一个更有效的电压和功角初值方案，来加快方程的收敛过程，减少方程迭代的次数，以提高计算速度。

The momental equation and characteristic curves of a hydraulic coupling are given.

给出了液力联轴器的力矩方程及特性曲线，分析了各种因素对其产生的影响，指出了在使用和维修中应注意的事项。

Since the equation used to study stability is parabolized, the problem can be solved by the marching procedure. Then the stability of nonparallel flow can be studied based on this characteristic of PSE.

由于稳定性方程作了抛物化处理，因而可以采用推进计算的方法进行求解，能够更有效地研究非平行流的稳定性问题。

For strong convective weather , it classified all historical sample events into 4 weather patterns (like northwest , trough area ,west wind and southwest current), established 4 characteristic fields of 400hPa height of HLAFS , then according to the principle of the pattern match calculate and compare the real-time HLAFS forecast products-2-using the similar method inside the big and small key areas , establish forecast equation , finally gain conclusion .To duststrom weather, the historical samples were sorted into duststrom and severe duststrom types in 5 regions (they are whole area, west, central, middle-west and middle-east of Inner Mongolia ),moreover set up different sample databases about ECMWF fields (including 500hPa height, 850hPatemperature and sea-level pressure).In order to making duststrom forecast at different time level , we first filtered the real-time data by FAX data ,and then used the method of similar range degree to compare the historical data to the actual data of ECMWF .To precipitation weather ,they were divided into 2 types that suit or unsuit airplane artificial precipitation stimulation in line with their emergence time and district .The appropriate weather physical factors come from T106 were chosen to establish the artificial precipitation stimulation prediction model . In the actual application , we can get prediction result as long as use the real-time forecast data of T213 in the prediction model .

针对强对流天气将历史样本天气分为西北气流型、槽区型、西风气流型和西南气流型等4个类型，并建立其HLAFS资料400hPa四种特征场，按照模板匹配的原理，用相似分析方法在大、小两个关键区中对实时HLAFS预报产品进行计算、比较，再建立预报方程，得出结论；对沙尘暴天气将其按区域分为全区、西部、中部、中西部以及中东部5类，再按强弱分别分为强和一般2类，建立ECMWF的3个场(500hPa高度场、850hPa温度场和海平面气压场)的历史资料库，在用传真资料消空之后，用相似离度方法计算实时ECMWF资料，做出不同时次的预报；对降水天气按出现时间和区域分为适合和不适合飞机增雨作业2类，选择T106资料中恰当的气象物理量因子，用BP神经网络算法建立人工增雨降水预报模型，实际应用中将实时T213相关预报资料代入预报模型即可。

Studying result enunciates that the dynamics characteristic of this machine can be opened out directly by compendious graphics mode and regularized dynamics equation can be established automatically by computer program .

结果表明：使用该方法可以用简明的图形方式直观揭示出机构的动力学特征，动力学方程建立的规则化便于计算机自动生成。

Then 4 approaches are used for solving semiconductor thermoelectric problems are proponed:(1) solve basic semiconductor equations directly,(2) solve heat transfer equation with the fitting expressions of thermoelectric transport,(3) approximation of relaxation interval time,(4) characteristic temperature of thermoelectric-pile method.

随后，提出了求解半导体热电问题的4种方法：①直接求解半导体方程组②驰豫时间近似法③利用温差电输运系数的拟合式来求解导热方程④热电堆特征温度法。

Solves the equation using finite difference method.Obtains the heat transfer characteristic of laminar flowed ice slurry in circular pipes with constant heat flux.

运用有限差分的方法，对所得的差分方程组进行求解，从而得到定热流状态下圆管内层流冰浆流体的传热特性。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。