对数

When analyze the stability of slopes, traditional methods often use suppose that the failure surface is circular or other typical functions.

在对边坡的稳定性进行分析评价时，传统分析方法引入了滑裂面为圆弧型的假设；也有学者将滑裂面假定为对数螺旋线型等其它函数形式。

In the algorithm designs of hardware, it is difficult to realize the function that is both time-consuming and occupy area such as floating decimal circular functions, exponential function and logarithm function.

在硬件算法设计中，浮点三角函数、指数函数及对数函数等操作是既费时又占用面积的操作，很难有效实现。

Using the data of the sunspot number and based on its characteristics the time sequence of the magnetic index of the sunspot magnetic field is established. The intensity of the South Asia summer monsoon circulation index is established using the NCEP/NCAR reanalysis data from 1948to 2006 and the relationship between them is analyzed.

利用太阳黑子相对数资料，根据太阳磁场磁性特征建立了太阳磁场磁性指数时间序列，并利用NCEP/NCAR再分析资料建立了1948-2006年的南亚夏季风环流强度指数，对两者之间存在的可能相关关系作了分析。

And extended them to asymmetric $3$-stage Clos network.

而我们也将这个结果推广到不对称的情况，甚至我们还在多重对数网路上也得到了同样的结果。

The coefficient of determination and mean residual error of the final model were 0.993 and 0.239 log-unit, respectively.

最终模型的可决系数为0.993，平均误差为0.239个对数单位。

Coefficient of determination and root-mean-square error were used as criteria for best model.

结果表明，反射率倒数的对数lg(1/R)是估算土壤重金属元素含量最好的光谱指标，尤其是Cd和Pb，检验精度R超过0.82。

Statistic analysis result shows that the time step is the most important influence factor of simulation precision, and there is relation between simulation error and the setup value of restitution coefficient which the greater the setup value is, the less the simulation error is. Although there is no effect to the total contact time in the course of collision, the value of the time step decides the total contact step, and there is a logarithmic linear correlativity between them.

统计分析结果表明：计算时步是影响模拟精度最重要的因素；模拟误差还同恢复系数的设定值有关，设定值越大，模拟误差就越小；计算时步的大小虽然对碰撞过程的总接触时间影响不大，但是却决定了碰撞过程的总接触时步数，二者之间存在对数线性相关关系

When seismic wavelet is in non-minimum phase , we can make it have smaller phase by doing exponential weighting . As for nonwhite noise problem of reflection coefficient , we may employ logarithmic power spectrum to estimate the autocorrelation function of seismic wavelet , then obtain seismic wavelet and deconvolution opera .

当地震子波为非最小相位时，可利用指数加权方法使之小相位化；对于反射系数非白噪声问题，本文提出利用对数功率谱来估算地震子波的自相关函数进而求取地震子波以及反褶积算子的方法；对于理想的期望子波，本文采用"宽带雷克子波"作为期望输出子波。

IN 1996, David Colander of Middlebury College, in Vermont, expressed his dissatisfaction with decades of economics by invoking a lofty analogy.

1996年佛蒙特州，明德学院的大卫。柯兰德尔，用打比喻的方法，对数十年的经济学，表达了不满。

For example, 10 3 = 1,000; therefore, log 10 1,000 = 3. The kinds most often used are the common logarithm and the natural logarithm.

如，10 3=1，000；于是log 101，000=3。通常使用的有常用对数和自然对数

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。