经验常数

必须特别注意这一经验常数的选择。

Extreme care must be taken to the selection of this empirical constant .

本模型中没有经验常数，每个参数都有明确的物理意义。

There is no empirical constant and every parameter has clear physical meaning in the proposed model . The proposed model is shown to be more fundamental and reasonable than Ergun equation .

b为经验常数。

And b was empirical parameter . It makes pollution .

b为经验常数。钢丝绳的检查

And b was empirical parameter . Inspection Made Easy

推导出的理论公式建立了经验常数K，n和吸附分子的微观性质之间的函数关系。

This theoretically derived expression established the relationship between empirical constants K , n and the microscopic properties or the adsorbed molecules .

Hugoniot线上的一个经验常数&来自多孔材料Hugoniot数据的对比研究

An Empirical Material Constant on the Hugoniot of Solids : From Comparative Study of Porous Materials

将Pitzer理论应用于20℃&50℃NaOH-H2O体系溶解度计算，提出Pitzer模型中的经验常数a和b是温度的函数。

Pitzer theory was applied to calculate solubility in NaOH-H2O system from 20 ℃ to 50 ℃ . The empirical constants ( a , b ) were considered as function of temperature .

导出了计算Kobus理论中所包含的全部经验常数的公式，使得Kobus理论的实际应用更加方便。

The formulas for calculating all empirical constants in the Kobus theory are presented , so that Kobus theory can be used more conveniently in practical applications .

本文利用日本气象厅研究所在筑波市213m气象塔1983年观测的湍流资料验证了大气边界层的局地相似性，求出了相似性函数的经验常数。

In this paper , local similarity is verified by the turbulence observations on the 213 m meteorological tower at the Meteorological Research Institute in Tsukuba Science City , Japan . Some empirical constants of the similarity functions are determined .

其中优化手段主要包括预测策略的改进，采用理论公式计算值替代经验常数，通过实际数据回归修正公式系数等。

Optimization means include improvement of prediction strategy , theoretical formula calculation instead of empiric constants , and correction of formula factors with actual data regression .

此分形模型预测结果与实验结果相符合，模型中不含任何经验常数，且每个参数都有明确的物理意义。

The proposed fractal models do not contain any empirical constant and every parameter in the models has clear physical meaning . The model predictions are compared with the measured data , and good agreement between them is obtained .

本模型预测结果与实验和数值模拟数据均吻合得较好，且气体渗透率被表示成多孔介质结构参数的函数，模型中没有经验常数。

It is found that the model predictions are in good agreement with available experimental data and simulations . The proposed gas permeability is expressed as a function of structural features of porous media and has no empirical constant .

浅谈标准平衡常数与经验平衡常数

Difference and Relationship between Standard Balance Constant and Experienced Balance Constant

本文指出了普通化学中阐述平衡常数存在的两个问题，论证其把经验平衡常数与标准平衡常数混为一谈而导致的概念混乱；

This article points out two problems in the expounding of equilibrium constants in general chemistry .

物质的聚集状态不同，因而定义的标准状态不同，故在标准状态时的化学势各异，标准平衡常数与标准态化学势有关，与经验平衡常数有别。

As substances are in different aggregated states , there are different definitions of standard states , and different chemical potentials in standard states . Standard equilibrium constant is related to the chemical potential in the standard state , and is different from empirical equilibrium constant .

本文对课题组之前开发的一个碳烟的半经验模型进行了改进，主要对模型中的若干经验常数进行了调整，以提高其模拟精度。

In this thesis , a six step semi-empirical soot model developed previously by the research group at Dalian University of Technology is improved . The primary work performed in this study is to optimize some empirical constants in the model to improve the prediction accuracy .