系数

After deriving the equations of reflectance spectrum of compressional and shear waves for thin beds at an arbitrary incidence angle , the equations of reflectance spectrum of compressional wave for a thin bed are reduced at zero incidence angle .

该文在推导出任意入射角入射条件下的多个薄层纵、横波反射系数谱理论基础上，进一步简化出了单个薄层垂直入射时的纵波反射系数谱计算公式，从而获得了在薄层条件下不同频率成分的纵波反射系数谱数学关系式。

The study shows that the effect of Young's modulus is largest, then hardening coefficient, initial yielding stress, hardening exponent and anisotropy r0 . While the effects of anisotropies r4 5 and r9 0 variation can be ignored.

研究结果表明，杨氏模量的波动对板料回弹量的影响最大，其次分别为硬化系数、初始屈服应力、硬化指数及各向异性系数r0的波动，而各向异性系数r4 5及r9 0的波动对板料回弹量的影响可忽略，且数值模拟分析材料参数对板料回弹量的影响趋势与理论分析一致。

According to the permeability test and self-mastery "L" type model test, the coefficients of permeability in horizontal and vertical direction at different degree of compactions were obtained. Based on the Darcy law, calculating formula for the model was deduced.

通过室内渗透试验、自制&L&型相关模型试验测得在不同压实度下水平向和垂直向的渗透系数，并根据达西定律等相关理论推倒出适用于该模型的计算公式，得到水平向和垂直向渗透系数随着压实度的增加逐渐减小，验证了该方法测定渗透系数的可行性。

The higher gasification temperature, the higher the relative enrichments of As, Cd, Co, Cr, Cu, Mg, Ni, Pb, Se and the lower of Zn in the high temperature coke and the low temperature coke.

痕量元素在高、低温焦中受气化温度影响变化趋势相同，即随着气化温度的升高，As、Cd、Co、Cr、Cu、Mg、Ni、Pb、Se的相对富集系数增加，Zn的相对富集系数减小，Mn、Hg、V、Sr的相对富集系数变化很小。

There are other factors to influence the occurrence of trace elements. The higher gasification temperature, the higher the relative enrichments of As, Cd, Co, Cr, Cu, Mg, Ni, Pb, Se and the lower of Zn in the high temperature coke and the low temperature coke. The RRE of Mn, Hg, V, Sr are not affected by gasification temperature in the high temperature coke and the low temperature coke.

痕量元素在高、低温焦中受气化温度影响变化趋势相同，即随着气化温度的升高，As、Cd、Co、Cr、Cu、Mg、Ni、Pb、Se的相对富集系数增加，Zn的相对富集系数减小，Mn、Hg、V、Sr的相对富集系数变化很小。

Based on the Miedema model and Tanaka equation, a new method for calculating the parameters in the molecular interaction volume model has been developed to predict the activity coefficient s of multicomponent liquid alloys, in which not experimental data but only some physical properties of elements are required.

基于Miedema模型和Tanaka关系，提出了计算分子相互作用体积模型参数的新方法。该方法仅需知道元素的某些物理性质而无须熔体的实验数据，简化了计算多元合金熔体活度系数的步骤。分别计算了Ti-6Al-4V和Ti-5Al-2.5Sn在不同温度下组元活度系数的变化，计算了多种铜基合金以及Zn-Sn-Pb-Cd-Bi合金的活度或活度系数与组元配比的关系；并与Wilson模型进行了比较，计算值与实验值较好吻合

This paper analyses and proves that the restoring saturation coefficient α of one dimension extra-saturation sediment discharge method and the modified coefficient K of the quasi-hydrostatic settlement method are reciprocals each other.

分析论证了一维超饱和输沙法恢复饱和系数α与准静水沉降法修正系数K互为倒数；在分析影响α值变化主要因素的基础上，建立了计算恢复饱和系数α的数学模型；通过误差验证分析和经过几年生产设计部门的使用情况证明，模型的研究思路正确，精度、可靠度均满足设计要求，可供生产设计单位使用。

This paper analyses and proves that the restoring saturation coefficient a of one dimension extra-saturation sediment discharge method and the modified coefficient K of the quasi-hydrostatic settlement method are reciprocals each other.

分析论证了一维超饱和输沙法恢复饱和系数 a与准静水沉降法修正系数K互为倒数；在分析影响a值变化主要因素的基础上，建立了计算恢复饱和系数 a的数学模型；通过误差验证分析和经过几年生产设计部门的使用情况证明，模型的研究思路正确，精度、可靠度均满足设计要求，可供生产设计单位使用。

Distributions of the absorption coefficients and the mass concentration are significantly uniform with a 0.74 correl...

吸收系数与粒子含量之间的相关系数为 0 。74，吸收系数与粒子含量的分布一致性较好。

The results indicated that the absorbance and scattering coefficients changed with the contents of fat.

结果表明，脂肪含量的变化会使吸收系数和散射系数都发生改变，而且散射系数的变化更大。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。