对数曲线

Meanwhile,according to the results we draw the flood insurance loss probability curve,and concluded that it is similar to lognormal distribution.

同时，根据计算结果得到洪水保险损失概率曲线，认为洪水保险损失近似服从对数正态分布。

At 0, 24, 48, 72, 96, 120 and 144 hour, the cell conditions were observed by micrography, and the examination was proceed with MTT colorimetry.

取对数期人肺癌细胞QG-56，分别培养于含10%FBS或Beagle-S的RPMI-1640合成培养基中，于第0、24、48、72、96、120和144 h各取出一块培养板进行检测，观察不同血清对细胞生长MTT曲线、细胞形态学的影响。

The elliptic curve discrete logarithm of non singular elliptic curve over finite field has no efficient attack up to now, which made it cannot be widely applied in cryptography.

目前，在有限域上非奇异椭圆曲线离散对数问题还没有有效的攻击方法，使其在加密技术中得到了广泛应用。

From this phenomenon we assume that there may be a phase transition in this region.

随后我们给出了该温度化学势区域系统压强对数密度的变化曲线，证实了这一相变的存在。

On the dose-response curve, 4or 5 well-spaced points were obtained for probit analysis to determine CD50 and LD50 of each agent.

使用Probit法将量效曲线直线化，建立3种局麻药的对数剂量一概率单位的回归直线方程，确定各自的量效关系。

The mean velocity distributions in turbulent boundary layers of smooth surface and two different riblet surfaces are measured with IFA300 constant-temperature anemometer in low-speed wind tunnel to validate the full development of turbulent boundary laye. Friction velocity and wall friction stress of turbulent boundary layer are obtained with the least-squares fitted curve of the sublayer velocity distribution based on Spalding formula, and virtual origin position of riblet surface can be acquired accurately.

在低速风洞中来流速度一定的情况下使用IFA300恒温热线风速仪测量了光滑表面和两种不同尺寸的脊状表面湍流边界层平均速度分布剖面，并验证了试验段湍流发展的充分性；通过应用Spalding壁面公式使用最小二乘法精准拟合了实验测量的边界层内层速度分布曲线，得到了湍流边界层壁面摩擦速度并进一步求得湍流壁面摩擦应力，较准确地计算出脊状表面的虚拟原点位置，并通过与对数律公式拟合结果比较分析，证实了该方法更加准确有效。

Methods At first, the relationship of linear or non-linear between dependent X and independent Y in original data can be distinguished by scatter diagram which can be made through Excel software.

方法通过利用Excel可绘制散点图的功能，了解原始数据自变量X和因变量Y间的线性与非线性关系，并由自变量X和因变量Y的自然对数转换后的散点图的情况，决定采用何种曲线拟合。

Methods At first, the relationship of linear or non-linear between dependent X and independent Y in original data can be distinguished by scatter diagram which can be made through Excel software. The scatter diagram of log- arithmic transformation between dependent X and / or independent Y decides which curve to be fitted.

通过利用Excel可绘制散点图的功能，了解原始数据自变量X和因变量Y间的线性与非线性关系，并由自变量X和因变量Y的自然对数转换后的散点图的情况，决定采用何种曲线拟合。

The model of logrithmic normal distribution was adopted to describe the sigmoidal release profiles of the TR tablets.

对数正态分布模型是描述定时释放片的"S"形释药曲线的最适模型。

Cell grew slowly in 48 hours, and spindle and polygon-shaped cells were observed after 72 hours.②The growth curves of MSCs in C/GP were shown as a sigmoidal shape.

绘制MSCs生长曲线为"S"形，第1个24 h为细胞潜伏适应期，第2~3个24 h为对数生长期，4 d后细胞增殖减慢，5 d后细胞基本停止生长。

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。