查询词典 coefficient of diffusion

Under constant groundwater table boundary condition,water content distributions along the heights of capillary rise of samples under three different compactness are presented in this paper.And the isothermal moisture diffusion coefficient was also obtained by Bruce method.

在常地下水位边界条件下，获得了三种不同压实度土体的含水量随高度的分布规律，并利用Bruce推导的方法计算了等温水分扩散系数。

The results show there is a relationship between chloride diffusion coefficient and stress state of concrete.

应力状态对氯离子在混凝土中的渗透扩散有一定的影响。

Using the diffusion coefficient obtained from the 400mg/L chlorophenol experiments, the model was able to predict the sorption kinetics of chlorophenol onto soil at different concentrations, indicating that the model is appropriate for describing the transport of phenol and chlorophenol within the two soils.

其中，第一种模式系假设土壤颗粒大小在实验过程中并不会随时间改变，计算求得之孔隙扩散系数约在8.3*10/sup -8/cm/sup 2//sec至2.9* 10/sup -7/cm/sup 2//sec附近，曲折度约为33-125，虽然曲折度和文献值相近，但因粒径不随时间变化的假设与实验所观察到的结果不符，所以此部分的结果较不具合理性。

The diffusion coefficient determination of VO2+ in Nafion 1135 membrane by electrical conductivity measurement was studied.

摘 要：研究通过电导率测定钒离子VO2+在Nafion 1135离子交换膜中的扩散系数的方法。

In the first part of this paper, the developments of theoretical study and experimental determination of liquid diffusion coefficient are briefly reviewed.

在本文的第一部分中，就与本研究有关的方面对目前液相扩散系数的理论研究及实验技术的发展作一简要全面的综述。

Purpose:To evaluate the diagnostic value of apparent diffusion coefficient for hepatic masses.

目的：探讨表面弥散系数评估肝占位病变的价值。

Purpose: To evaluate the usefulness of quantitative analysis of apparent diffusion coefficient in the MRI diagnoses of intracranial tumors.

目的：研究弥散系数的定量分析在脑肿瘤磁共振诊断中的价值。

The value of apparent diffusion coefficient and fractional anisotropy were measured.

结果32例脊髓压迫损伤患者中13例可见T2WI高信号。

In eight kinds of membranes we simulated, the diffusion coefficient value of Na+ and Cl- had much difference.

并对膜材料的结构单体与水和盐分子在膜内扩散系数相关性进行了分析与讨论。

By adding YJ-504 corrosion inhibiting composite concrete additive and adopting the match technique of slag powder and fly ash,the high performance concrete shows excellent properties of low Cl-diffusion coefficient and freeze-thaw cycles ;The property of corrosion inhibition on steel of YJ-504 corrosion inhibiting additive satisfies completely the demands of related standard.

采用YJ-504复合型混凝土防腐阻锈剂，辅之以矿渣粉和粉煤灰双掺技术配制的高性能混凝土，表现出优异的抗氯离子扩散、抗冻融循环破坏性能；YJ-504复合型混凝土防腐阻锈剂的阻锈性能完全满足相关标准规定要求。

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。