变化系数

From the probabilistic equation of debris-flow occurrence, the curves of probability-slope-water level were obtained. One can see the influences of water level and sediment-layer slope on the probability of occurrence from the curves. The influence of coefficients of variation on occurrence probability are also shown in this paper.

由土石流发生机率方程式，推求土石流发生机率－坡度－水位曲线，并藉以探讨参数之变异系数对土石流发生机率之影响，及评估土层在水位、坡度的变化下，土石流之发生机率。

Then, calibration are conducted by direct pressing. Mariations of resistance under pressure, pressure coefficients of manganin are discussed.

本实验首先拟探讨上述各加工条件下电阻变化程度的大小，接著再求出 Manganin 压力计电阻的压力系数。

The changes of the conductivity, molar conductivity, activity coefficient and relative partial molar free energy of LiCl with concentration and temperature of the solution were discussed.

应用电导率仪在288~308K温度范围内测定了LiCl在纯有机溶剂中的电导率；利用公式计算了LiCl的摩尔电导率；按Kohlrausch经验公式，使用Origin软件进行线性拟合，作图外推求得LiCl在异丙醇中的无限稀释摩尔电导率λ0值；并讨论了LiCl在异丙醉中的电导率、摩尔电导率、活度系数和相对偏摩尔自由能随溶液浓度和温度的变化关系及其温度对LiCl溶液无限稀释摩尔电导率的影响。

Good correlations were found between the computed phytoplankton absorption coefficient and the measured value,with the determination coefficients (r2) being higher than 0.97 and slopes being around 1.0;and the RMSE values could be controlled within 17% over the main absorption wavebands such as 443,490 and 683 nm.

基于这种光谱变化规律本文建立了ap分解模型，并采用2005年同一海区实测数据进行验证，发现模型计算光谱与实测数据有较好的相似性，在主要的吸收波段如443，490和683 nm处的平均相对偏差值在17％以内，两者之间线性关系拟合的决定系数(R2)均在0.97以上，斜率接近于1.0。

An algorithm for decomposition of multi wave and multi component data into upgoing and downgoing P wave and S wave was derived in frequency wave number domain in this paper. The reflection coefficient versus incident angle was calculated, which can provide foundational data for the AVO inversion of elastic parameters and prediction of fluid factor.

在频率波数域中采用解析法，解出多层条件下海底实测的多分量地震数据分解成上行和下行P波和S波的算法，导出海底各层地震反射系数随入射角变化的递推计算公式，为海底多波多分量AVO弹性参数的反演及流体因子预测提供基础数据。

DNA synthesis rate was assessed by performing tritiated thymidine incorperation assay. The expression of SM-α-actin and proliferation of DSMC were analyzed by immunofluorescent assay and flow cytometory.

结果显示，逼尿肌细胞的形变量和粘弹性并不呈线性关系，一定限度内的张力负荷（拉伸20％）粘弹性系数下降，而继续加大张力（拉伸30％）时变化并不明显。

Finite element method and nonlinear regression method is used to discuss the relationship of Y shape steel tube joint's local translational displacement and local translational stiffness to the ratio between the width and the thickness of main tube, ratio of width and thickness between branch tube and main tube and included angle between branch tube and main tube's the axial directions.

本章分析了Y形方管节点的平动位移和平动刚度随主管宽厚比、支主管宽度比、支主管厚度比和支主管轴线夹角等参数的变化关系，并从各回归方程及回归系数的显著性检验可知回归方程的准确性。

This paper has made systematic research about characteristics of soil water dynamic changes, water deficit of the root-zone of pear-jujube tree with regulated deficit irrigation, physiological control in the process of the water use and the stomal response mechanism of pear-jujube tree under the water deficit environment, and the effects of different deficit irrigation levels at different growth stages vegetative growth and repproductive growth of pear-jujube trees, and also its regulation mechanism.

针对西北半干旱区果业生产面临水资源紧缺的现实，论文以该区特色经济果树梨枣树为研究对象，在西北农林科技大学旱区农业水土工程教育部重点实验室、陕西省大荔县城关镇梨枣园分别开展了温室与大田试验，对调亏灌溉的梨枣树根区土壤水分动态变化特征、水分亏缺与复水环境下梨枣树用水过程、生理调控与气孔响应机理、不同生育期不同水平亏水处理对营养生长与生殖生长的影响及其调控机制等进行了较系统的研究，分析了各生育期不同亏水处理对梨枣耗水规律、产量、品质、作物系数、水分利用效率及经济效益的影响，取得了以下成果：⑴通过亏水处理与复。。。

The results show that the atomic population is time-independent provided that the atoms are in |β11〉 state. For the other three Bell states, there will appear the periodical collapse revival of atomic populationif the initial mean photon number reaches some special values. With the increase of the initial mean photon number, the oscillation frequency of the time-evolution of atomic population increases correspondingly, and the amplitude decreases. The degree of the entanglement of the two-mode entangled coherent field has no

结果表明，当双原子体系的初态为|β11〉时，原子布居均不随时间变化；当双原子体系的初态为|β00〉，|β01〉或|β10〉且初始平均光子数达到一定值时，演化特性呈现周期性的崩塌-回复效应，并随初始光子数的增加，其演化曲线的振荡频率增大，振幅减小；双模纠缠相干光场的纠缠程度不影响Rabi振荡频率，但对振幅影响显著； Kerr介质与光场耦合系数达到一定值时，对Rabi振荡频率和幅度及原子布居的崩塌-回复周期产生强烈影响。

Roughness coefficients in rills that are easily affected by the slope gradient, are closely related to Reynolds number.

细沟流阻力系数的大小与水流雷诺数有关，但其变化趋势受坡度的影响较大。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。