曲线拟合

Hyperthermia was applied to the latter,41.5 degrees Centi grade, 1 h, after having received same irradiation. The cel surviving fractions were determined by clonogenic assay and the parameters of the multi-target/single-hit model, Do, D9, as well as those of the linear-quadratic model, ratio of alpha and beta, were elicited.

集落形成率实验检测两组细胞在不同情况下的细胞存活分数，分别根据多靶单击模型和线形二次模型拟合绘制细胞存活曲线，求出 D0、Dq及α/β比等细胞存活曲线参数，并获得照射2 Gy时的存活分数SF2。

The resulting arc spline is shape|preserving, and has the same number of inflections with the original polyline;(2) The segment number of circular arcs is the same as that of data points.

这种算法具有以下 3个特点：(1)生成的圆弧样条曲线具有保形的特点；(2 )圆弧样条中圆弧的段数与型值点个数相同；(3)圆弧段之间的连接点不一定在插值的型值点上，这样就能用更多的自由度来控制拟合曲线的形状。

This method can guarantee continuity and one-order smoothness of the estimated failure rate curve.

基本思路是：对那些寿终时刻，分别用单位时间内的失效频率做为失效率的估计，然后用二次样条函数来拟合出失效率曲线，这种处理可保证失效率曲线的连续性与一次光滑。

This study consists of three parts. Firstly the equivalently accelerative corrosive environment is determined through the analysis of statistic data of corrosion environment. Secondly the fatigue test is carried out under the constant amplitude cyclic loading for the specimens which are exposed in the corrosive environment for equivalent calendar time of zero year, 3 years, 8 years and 13 years. Four S-N curves with different corrosive time are obtained based on the fatigue experiment. Finally the regression method of S-N curves for experimental data is researched and a weighted least square fit is put forward in which the weigh of a group of test data is inversely proportional to the length of the confidence interval.

进行了以下几个方面的工作：(1)通过实测、统计、分析得到了当量加速环境谱；(2)完成了在当量加速环境谱下预腐蚀日历年限0年、3年、8年和13年的腐蚀试验，并进行了成组常幅疲劳试验，得到了不同预腐蚀年限下的S-N曲线；(3)进行预腐蚀后的S-N曲线的数据拟合方法的研究，提出了考虑置信区间长度影响的加权最小二乘法。

The optimal fitting model is derived from the measured data ,then the error curve is drawn and printed out.

根据测得的数据，求出最优拟合模型，再绘制该特性曲线，并通过微型打印机打印该曲线。

The experiment fitted curve and the traditional non-shake theoretical curve has the big difference.

实验拟合曲线与传统无震荡理论曲线有较大差异。

The results of the relation curves describe the relationships of the dimensions vs maximum displacement of the mass, the dimensions vs resonant frequency and the forced vibration responding of the mass's harmonic curve were also given.

同时，拟合出了悬臂梁及质量块的结构参数与质量块最大位移量和谐振频率的关系曲线，以及质量块受迫振动的谐响应曲线。

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。

Then through dynamical analysis, every instantaneous acceleration distributing of slope under dynamical earthquake can be got too. According to this result, adding earthquake force to structure by way of inertial force, this paper analyses the slope stabilization by using FEM strength reduction method and gains every instantaneous safety factor and its corresponding slide. Curves of safety factors versus duration can be made by curvefitting. By safety factors versus duration curves and slides, we can value structure's quakeproof stabilization and point its slide out. By these principles, programs of FEM stabilization analysis for each moment are organized.

首先通过三维非线性有限元静力分析得到动力分析的初始应力，再进行动力分析得出边坡在动力作用下每一瞬时的加速度分布，根据每一瞬时的加速度分布的结果，将地震作用力作为惯性力加在结构上，用有限元强度折减法进行边坡稳定分析，得出在地震动力作用下每一瞬时的安全系数及对应滑裂面，拟合可得到一条安全系数随时间变化的曲线，根据这条安全系数时程曲线及滑裂面，综合得出结构的抗震稳定安全系数及对应的滑裂面。

With increasing loading, the reduction degrees of average correlative coefficients of linear fitting functions of isochronous stress axial strain curve and isochronous stress-radial strain curve are 0.97% and 0.67% respectively, which indicates the linear correlation decreases commonly.

随加载应力水平的提高，应力－轴向应变等时曲线和应力－径向应变等时曲线线性拟合函数的平均相关系数下降幅度分别为0.97%和0.67%，线性相关性普遍降低。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！