对数

According to the integral equations of pipe flow, the relationship between the friction factor and the log-law was approached, as well as the effects of low Reynolds number on the relation of friction factor.

利用管流的积分方程，深入探讨了摩擦系数关系式的系数和对数定律常数之间的关系，进一步分析了低雷诺数对摩擦系数关系式的影响。

In this paper, based upon the precondition of half-sib design and flanking genetic markers, the change of statistical power for detecting QTL was investigated as selection intensity varied.

提出了相对数的概念来说明在不同选择强度下QTL检测的统计功效变化。

Saturation time headways with different lane widths and turning radiuses were measured on the spot and abnormal data were identified and eliminated.

在确定和排除了数据中的异常值后进行数据分布分析，结果表明右转车道饱和车头时距服从对数正态分布或正态分布。

Result: Hyodeoxycholic acid in methanol extract was well separated, the relationship of logarithms of injection amount and peak area was linear ( r =0.999 8) over the range of 2.4-24 μg.

结果：猪去氧胆酸进样量在2.4～24 μg，进样量和峰面积的对数呈线性( r = 0.999 8)。

The method of moments is used to analyze and calculate the broadband characters of impedance,voltage satanding wave ratio,gain and radiation pattern of larger angle LPDA,and the relation between these characters and the parameter of antenna construction is discussed in this paper.

本文采用矩量法分析和计算了对数周期天线在张角较大时，它的阻抗、电压驻波比、增益及方向图的宽带特性，讨论了这些特性与天线结构参数之间的关系。

The approach takes a basis of the local statistical parameters of the logarithms of fatigue lives at the reference load. According to an assumption that the material constants in each relation are concurrently in same probabilistic level, the curves is described by a general form of mean and standard deviation curves of the logarithm of fatigue life, in which four material constants are at most contained.

以参考载荷试验数据的统计参量为基础，按照每个模型中材料常数协同处于相同概率水平原则，将曲线表示为对数疲劳寿命均值和均方差线的广义形式，至多4个材料常数。

Using the log scale, the pigeons will correctly classify nine and 10-second flashes more frequently than the 7 and 8 second flashes.

用对数的方法，相对于7-8秒的闪光，鸽子能更准确的区分持续9-10秒钟的闪光。

Pseudo-random multi-frequency signal is invented and named by academician He Jishan. The bandwidth of PRMF signal is controllable, it's energy concentrates on several frequencies, which are equally spaced on log scale coordinates.

何继善院士发明和命名的伪随机多频信号，由于其带宽可控，能量主要集中在数个在对数坐标上呈等间距分布的频率上，是电法勘探的理想场源。

Contrast Sensitivity Function Linear vs Log Scale Demo: Contrast Sensitivity Function Are Ganglion Cells Responsible for Shape of CSF Striate Cortex and Beyond From LGN to Cortex What is the Difference Between M and P Cells?

对比敏感函数线性及对数尺度示范：对比敏感函数节细胞是负责对比敏感函数的形状吗？

Pseudo-random multi-frequency signal is invented and named by academician He Jishan. The bandwidth of PRMF signal is controllable, it's energy concentrates on several frequencies, which are equally spaced on log scale coordinates. It is ideal excitation source for electrical exploration.

中文题名伪随机多频电磁法观测系统研究副题名外文题名 The study on pseudo-random multi-frequency electromagnetic prospecting system 论文作者陈儒军导师何继善学科专业地球探测与信息技术研究领域\研究方向学位级别博士学位授予单位中南大学学位授予日期2003 论文页码总数165页关键词电法勘探电磁法伪随机多频信号馆藏号BSLW /2003 /P631.3 /4 伪随机多频信号由何继善院士发明和命名，该信号带宽可控，其能量集中在数个在对数坐标上呈等间距分布的频率上，是电法勘探的理想场源。

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。