查询词典 natural logarithm

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

The distribution of variance, exhibited severe skewness which can be adjusted by natural logarithm transformation. Table 1.Comparison TA with GE of HRV. Table 1. presented the RR interval、 Ln、 LF% and variance of two groups. TA had significant higher than GE.

在安静心跳率TA比NT及HT患者之心跳率低，且达显著水准；TA与NT及HT间R-R波间隔时间皆有显著差异；在Ln的结果，TA与HT有显著差异 NT与HT也有显著差异；LF%的结果，TA显著高於HT，NT与另两组皆无显著差异；心率变异度部份HT皆显著低於另外两组。

The natural logarithm of this ratio is called the logarithmic decrement.

此比率自然对数称为对数的减量。

The paper introduces an algorithm to natural logarithm based on Maclaurin series.

基于麦克劳林级数公式计算自然对数，构造计算式向1逼近，从而加快级数的收敛速度。

Expression to compute the natural logarithm of.

要计算自然对数的表达式。

A new method based on gray-level value natural logarithm ratio Neighborhood filters is presented for image denoising in this work.

提出了一种新的利用图像灰度值自然对数比率邻域滤波的图像平滑方法。

R2 is the natural logarithm of the quantity r1 plus one.

r2 是量 r1 加一的自然对数。

The safe index of design performance is defined as the negative natural logarithm of structural failure probability in this paper.

因此，基于结构性能的抗震设计方法所要解决2004年12月Dec.2004的首要问题就是如何选择设计性能等级[1]。

Returns the natural logarithm (base-e logarithm) of x .

返回 x 的自然对数。

Result indicated that this model and the experimental data were inosculated. Good linear relationships were found between the natural logarithm of solution density, the logarithm of reaction duration, the reciprocal temperature and the natural logarithm of medicament concentration.

结果表明在单因素条件下，药剂质量浓度对数、反应时间的对数、反应温度的倒数与溶液中溶质的自然对数之间具有良好的线性关系，该模型可以同试验数据相吻合。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。