对数

The logarithm difference values of partition coefficients of the compounds in butyl ether/water and in cyclohexane/water system were used for the measurement of the Lewis acidity, while the logarithm difference values of partition coefficients in trichloromethane/water and in tetrachloromethane/water system were used for the measurement of the Lewis basicity, and they were used successfully to differentiate the relative strength of Lewis acidity and basicity for 59 benzene and its derivates.

以化合物在正丁醚/水和环己烷/水溶剂体系中分配系数的对数差作为酸性指数，以其在氯仿/水和四氯化碳/水溶剂体系分配系数的对数差作为碱性指数，提出了一种新的度量有机物Lewis酸碱性的方法，按此方法成功地区分了59种苯系物Lewis酸碱性的相对强弱；并成功地将上述酸碱性指数引入定量结构—性质/活性相关研究之中，探讨了苯系物的正辛醇/水分配系数、水溶解度和土壤有机碳吸附系数等常见理化性质与其Lewis酸碱性间的相关性并建立了相应的定量模型，发现它们之间存在良好的相关性。

A simplified LLR ordering scheme employed in uncoded systems and an exact LLR ordering scheme employed in coded systems are proposed.

在未编码情况下给出使用线性检测器近似的对数似然比信息排序方法，在迭代检测解码情况下给出使用解码器反馈的比特后验信息进行对数似然比排序的方法。

The distribution property of combinatorial sequences is a basic problem in combinatorics. One of the most important properties is unimodality which includes unimodal, log-concave, log-convex and PF properties.

组合序列分布性质的研究是是组合数学中最原始最基本的问题之一，其中一类重要的分布性质是单峰型性质，包括单峰性、对数凹性、对数凸性和PF性质等。

Analog calculation method, use log - square - antilog.

模拟计算方法﹐利用对数--平方--反对数。

True root-mean-square,log amplifier and antilog amplifier,offset voltage,error analysis

真有效值；对数-反对数放大器；失调电压；误差分析

Also called Interleaves.

此比率自然对数称为对数的减量。

Dynamic pressure averaging pipe was generally applied to blowing rate measurement in rectangular pipe of power plant, the average velocity of flow in the section was represented by the average dynamic pressure at the line through the geometric center of the cross section, and then the blowing rate was determined.

针对这一问题，本文设计了基于&对数契比雪夫法&的送风流量测量装置，将5支动压平均管置于同一截面，按&对数契比雪夫法&选点位置开孔，把这5支动压平均管的静压输出孔、总压输出孔分别连接到一起作为传感器组件的差压输出，实验表明这种方法使测量准确度明显提高。

The aerobic plate count was determined before and after these treatments. The results showed that under the experimental condition, Escherichia coli and Staphylococcus aureus were inactived signi...

结果表明：试验条件的超高压处理对大肠杆菌、金黄色葡萄球菌的杀灭效果很好，残活率最大下降了8.48、5.90对数；对生鲜猪肉和芥菜制品中的微生物具有较好的杀灭效果，残活率最大下降了3.45、3.57对数。

It has been suggested that RADs from different habitat types tend to follow different RAD models, such as the logseries or lognormal distribution.

研究一直认为，来自不同生境的RADs秩--丰盛度分布倾向于符合不同的模型，如对数序列分布或对数正态分布。

The saturated water content, field moisture capacity, wilting coefficient, available water, readily available water, slowly available water of experimented soils respectively has negative power, logarithmic, exponential, exponential, exponential, power, logarithmic relationship with soil bulk density.

土壤容重对土壤水分蓄持能力有较大影响，土壤蓄水能力随容重增大递减，比水容量也随容重增大递减，土壤饱和含水量、毛管断裂含水量、田间持水量、凋萎系数、有效水含量、易效水含量、迟效水含量与容重分别呈幂函数、对数、指数、指数、指数、幂函数、对数关系。

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。