幂函数

Effects of parameters of the asphalt concrete on behaviors of core wall are analyzed.

采用双曲函数与幂函数结合的模式拟合沥青混凝土的三轴蠕变试验曲线，对大坝进行蠕变分析。

A new growth model is derived from the logarithmic function and the power law.

通过对幂函数和对数函数的比较分析，本文构建了新的词汇增长模型，并应用此模型推导出科技英语的理论词汇增长曲线及其95%双向置信区间。

And the influence factors such as suspension concentration,operating pressure,Reynolds number and Euler number were established.

结果表明，死端过滤速率衰减模型中过滤速率与时间呈幂函数关系、而十字流过滤速率衰减模型中过滤速率与时间则呈一次函数关系，死端过滤时悬浮液浓度和气压过滤压力对其过滤速率衰减模型系数的影响均呈三次函数关系，在十字流过滤时悬浮液浓度、操作压力以及雷诺数对模型系数b的影响均呈线性关系，轴向流十字流过滤速率衰减模型系数b与欧拉数呈反比，而旋转流十字流过滤时则模型系数a与欧拉数呈反比关系。

Popular choices are the exponential and inverse power functions typically used in entropy models, and the gamma function often recommended in US planning practice.

大多数的选择是指数和熵模型中常用的反幂函数，在美国的计划编制中通常建议采用γ函数。

Therefore, in this paper, a newempirical creep model is proposed, in which the power function is used for shear stress-strain behavior and hyperbolic function is used forstrain-time behavior.

鉴于此，本文试图建立新的蠕变本构模型进行理论分析，即应力-应变关系采用幂函数，应变-时间关系采用双曲线函数。

Tree's volume; biomass; nonlinear least-squares regression; power function model; hyperbolic function model

材积；生物量；非线性最小二乘回归；幂函数模型；双曲函数模型

Based on this analysis, a new method for evaluating the bluntness magnitude of a Berkovich indenter was proposed. This method was examined by the experimental results of indention loading curves for pure nickel and aluminum alloy 8009, and good agreement was obtained. For thin metal films deposited on hard substrate, a method is established for determining the yield strength and hardening index of the film from nanoindentation loading curve.

通过对理想与钝化Berkovich压头以及球形压头纳米压入软膜/硬基材料加载过程的数值研究，给出了两种压头纳米压入加载曲线的幂函数拟合指数及最大压入载荷同膜、基材料基本力学性能间的函数关系，并分别就Berkovich压头与球形压头建立了由纳米压入加载曲线确定沉积在陶瓷基体上金属薄膜屈服强度与硬化指数的方法。

Based on specific requirement for the top-coal caving mining to the four-bar linkage ,a design method of the four-bar linkage is put forward in the paper in which the least difference function between the lemniscate locus and the power function curve is used as the main objective function.

基于综放工艺对支架四连杆机构的特殊要求，首次提出以双纽线与幂函数曲线之差值最小作为主要目标函数的数学模型，并在此基础上应用VisualBasic5 0编制了四连杆机构的优化设计程序，可以同时实现优化参数显示与优化结果的动态显

A power function is introduced to deduce the occurrence probability function of resistivity anomaly.

根据概率论的基本理论，引入幂函数并推导了电阻率异常发生概率函数。

The paper adopts the RBF neural network to fit ship lines at the first time and puts forward the method determining the RBF center point sets suitable for fitting ship lines. It shows that the method is of much higher learning speed compared with BP neural network, and is both practical and feasible based on the examination of the fitting precision by using the power function and circular function.

采用RBF神经网络拟合船舶型线，提出了适合船舶型线拟合的RBF中心点集的选取方式，与BP网络相比大大提高了学习速度和精度，用幂函数和圆函数检验本方法拟合曲线的精度，充分证明本方法拟合船舶型线是实用可行的。

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。