查询词典 variable condenser

Many high-rise buildings can be simplied into variable cross-section cantilever beam, which equation of free vibration is variable coefficient differential equation of higher order and there is no general solving process for which in mathematics.

对这类方程，数学上没有提供一般的解法。本文采用的级数解法可求出任何变系数的四阶微分方程，在给定边界条件下的解。

Changing the scale of one x variable will lead to a change in the scale of that coefficient and standard error, so no change in the significance or interpretation on this variable and other variables.

改变一个变量x的测度单位会导致该变量系数和标准差的相应改变，所以所有解释变量显著性和对其解释没有改变。

A variable-step modified Euler time integration method is proposed and analyzed. Four major factors that affect the efficiency of the variable-step modified Euler time integration method are discussed. These include stability and accuracy analysis for the damped fix-step modified Euler integration formula, adjustment method of the fix-step basic integration formula to accommodate step-size changes, suitable range of the step-size selection strategy based on truncation error concept and development of the step-size selection strategy based on apparent frequency concept to satisfied the specified error bound and stability condition.

提出了变步长修正Euler时间积分法，详细讨论了影响变步长修正Euler时间积分算法效率的四个主要因素，它们包括：有阻尼问题的修正Euler法的稳定性和精度分析，调整固定步长的基本积分公式使之容纳步长大小变化的研究，基于截断误差概念的步长大小选择策略适用范围的讨论，同时满足规定误差界和稳定性条件的、基于表观频率概念的步长大小选择策略的建立。

An exogenous variable is a variable that is not explained by the model but rather is taken as given.

外生变量是模型本身不予以解释而是当成已知的变量。

Secondly, is China's money supply an exogenous variable or an endogenous variable?

其二，货币供给的内生性与外生性问题。

Traditional economics regards institution as a given exogenous variable, while the institutional economists treat institution as an evolutional endogenous variable of economic development.

与传统经济理论把制度视为既定的"外生变量"不同，制度经济学认为制度是会变迁的、进而影响经济发展的"内生变量"。

The results demonstrate that: ARMA(1,1) model,auto-regressive model with GDP as exogenous variable,auto-regressive model with policy as exogenous dummy variable,and logarithm linearity and removal average model are all valid models for forecasting tax revenue.

结果表明：ARMA(1，1)模型中，以GDP为外生变量的自回归模型、以政策因素为虚拟外生变量的自回归模型以及对数线性移动平均模型都是预测税收收入的有效模型，但以GDP为外生变量的自回归模型在预测2005年税收收入时，预测值与实际值的预测偏差仅有1。

By introducing the exogenous supply shock variable into Phillips Curve and adding asset prices (e. g. housing price and stock price) and the exogenous demand shock variable to IS Curve, this paper applies GMM method to estimate the extended IS-PC Model between 1996 and 2006. The empirical results show that housing price has a notable positive impact on the output gap, while share price doesn't have. Lastly, the article puts forward corresponding enlightenments.

本文在菲利普斯曲线的解释变量中引入外部供给冲击变童，在IS曲线中引入了房价、股价等资产价格和外部需求冲击变量，以我国1996-2006年的季度数据为样本、采用GMM方法佑计了扩展后的IS-PC模型，实证结果显示房价对产出缺口有显著的正向影响而股价对产出缺口的影响不显著，并在此基础上提出了相应的政策启示。

According to the theory created for the generalized multi-pole technique (in domain of half-analytical method), the center of each circle is determined as a starting point of each variable in a series expansion of the 2D-field solution function, and the arranging blank of the starting points in the generalized multi-pole technique can be filled up owing to the precise variable positioning.

根据为广义多极技术创建的理论体系，这些极点确定了解函数在级数展开式中各变量的起点。正因为这些变量的准确定位，不仅克服了广义多极技术中极，点位置设置的盲目性，而且提高了解的计算效率和计算精度。

By applying the proposed control law to discrete-time variable structure control systems, the stability of origin and steady of systems are better than the exponential rate reaching law and proportional-constant-variable rate reaching law.

应用该趋近设计变结构控制系统，其原点的稳定性和系统的平稳性都优於指数趋近律和比例－等速－变速趋近律。

Don not attempt to do something which you can not to do.

不要企图做那些办不到的事情。

The expression of CTGF and TNF-αweredetected by immunochemistry and the number of Clara Cells was calculated.

光镜下观察肺组织的病理变化，采用免疫组化染色观察肺组织中结缔组织生长因子和肿瘤坏死因子-α的表达和Clara细胞的数量。