查询词典 correction coefficient

Based on the railway transportation data from 1978 to 2005,the four targets,such as passenger,passenger kilometers,freight traffic,freight ton kilometers are analyzed;and gravity center model,coefficient of variation and the weighted coefficient of are applied to in order to measure and evaluate the regional railway transportation disparities.

利用1978~2005年的铁路运输数据，采用重心模型、变异系数和加权变异系数，从客运量、客运周转量、货运量和货运周转量4个方面，对中国铁路运输的区域差异进行了统计分析和评价。

Based on these da- ta,an optimization model to distinguish skin drag coefficient and form drag coefficient was es- tablished.

根据这些试验数据，利用动量法原理和数学优化方法构造了摩拖曳系数和形拖曳系数的辨识模型，将摩拖曳系数和形拖曳系数两项分开。

According to the concept of cementitious coefficient of fly ash, a mathematics formula of calculating cementitious coefficient that comprises three parameters (fineness, ignition loss, ratio of water demand ) has been established on the basis of experimental results.

根据粉煤灰胶凝系数概念，通过试验研究，建立了细度、需水量比和烧失量三参数的胶凝系数计算模型。

The reaction kinetics was studied by selecting control-step method as well as modified Debye-Hückel activity coefficient model and Bromley osmotic coefficient model. The results show that the reaction order is 2 and apparent reaction activation energy 85.8 kJ/mol, and the reaction is mainly controlled by precipitation of KB5O8?4H2O.

采用选取控制步骤法并引入修正的Debye-Hückel活度系数模型和Bromley渗透系数模型研究了该反应的动力学的影响规律，得出反应级数为2，表观反应活化能为85.8 kJ/mol，反应主要受四水五硼酸钾晶体析出的控制。

In this thesis, Water Solubility, 1-Octanol/water Partition Coefficient, molecular Total Surface Area, Aqueous Activity Coefficient, Henry Law's Constant and gas chromatogram relative retention times for biphenyl and its 209 chlorinated congeners were studies with holographic QSAR techniques and highly predictive QSAR models were developed. An internal validation (cross-validation) and external validation were performed to evaluate the predictivity and robustness of the HQSAR models. Based on these highly predictive QSARs, the corresponding data of 5 properties of all these pollutants were presented.

应用简化的响应曲面分析来建立显著的预测模型，必须要考虑到空间立体因素的影响；基于分子模拟技术的三维QSAR技术能够建立显著的预测模型，并且有利于对毒性机理的理解；而基于分子全息的QSAR技术建立了具有高度预测能力的QSAR模型，组内交叉验证和组外预测等方法证明模型具有高度的预测能力和稳健性，可以对硝基芳烃这一类分子结构、体内代谢过程和致毒机理都很复杂的污染物进行定量预测。

MGM is introduced to solve field distributions in 3-D electron optical systems. The difference equation, the discrete form of Laplace's equation, is deduced in 3-D Cartesian coordinates. In view of the smooth effect, MGM combines Gauss-Seidel iteration with a technique known as coarse grid correction. Formulae for restriction and prolongation are deduced and expressed in terms of tensors.

将多重网格法引入电子光学系统中三维静电场的计算，对三维笛卡尔坐标系中的差分方程，采用高斯-赛德尔迭代法求解差分方程组，并结合迭代过程讨论了粗网格的误差校正技术；在不同网格层之间进行场值的限制和延拓，推导了三维静电场中的限制、延拓公式并以张量的形式表示。

Objective To find out the incidence of hypertension, hyperglymia and hyperlipemia and their correction with heart abnormity in city.

目的 了解城市市区成人高血压、高血脂和高血糖的发病率及其与心脏异常的关系。

This finding gives a good explanation to some experiment results which were not understood previously, such as"additional temperature effects"meaning that the flashover voltages after air density correction still increase with the decrease of temperature, and the increment of AC flashover voltage over an insulating surface caused by increase of unit absolute humidity is abnormally high, etc.

根据这一发现，可以很好地解释以往无法解释的一些试验结果，如所谓"温度的附加影响"，即同一绝对湿度对应的工频闪络电压，经过空气密度校正之后，仍随环境温度下降而明显增加。

The system chosen here is still on the small side and the deformation energy Edef as well as the absolute magnitude of the counterpoise correction are rather small provided

这里选择的这个体系仍然是较小的，变形能Edef和均衡校正都相当小，假若是用中等到大的基组。

The method is applicable for instrument response correction processing of accelerogram recorded by digital accelerograph of China strong motion network.

该方法适用于我国强震动台网数字强震仪获取的加速度记录的仪器响应误差校正处理。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。