对数的

Reissner topic,which thinks fracture plane behind retaining wall is made up of a logarithmic spiral and a straight line,and by using limit equilibrium and constrained optimization,the formulas of active earth pressure,the resultant force of earth pressure and its application point are obtained.

基于普朗德尔-瑞斯纳课题认为，挡土墙土体破裂面是由对数螺线与直线组成的复合滑动面的结论，采用极限平衡法和约束优化相结合的方法，重新推导了主动土压力及其合力和作用点高度的计算公式。

Based on the meshing theory of logarithmic spiral bevel gear, the location and the movement relationship between the tool and the machining gear in the processing technology of logarithmic spiral bevel gear are studied by establishing the mathematical model of multi-axis NC machines.

目的 针对提出的一种新型锥齿轮-对数螺旋锥齿轮，研究其加工工艺过程中刀具与加工齿轮间的位置与运动关系，以便最终实现这种新型锥齿轮的加工。

The reason for the logarithmic response is that it covers a wide range of frequencies.

这种对数性的反应的原因，是它可以涵盖很宽的频率范围。

They support almost all the useful operations, and the logarithmic average cost is very small.

他们支持几乎所有的有用的操作，以及对数平均成本是很小的。

Our perception of brightness is logarithmic, not linear.

我们对亮度的感受特性是对数性的，而非线性的。

Moreover, communication is affected by psychological process, it follows the logarithmic transformation of sense and perception.

此外，信息交流还受心理过程的影响，它遵循格式塔心理学的基本原则及感觉知觉过程中的对数变换法则。

This measurement scale is based on logarithms, because the range of possible concentrations of acid is enormous, ranging from none to a whole lot of acid.

这一测量值是以对数为基础，因为酸的浓度范围是非常巨大的，范围从一点也没有到很多很多的酸。

And, a new method for estimating two parameters of Weibull distribution from lognormal distribution parameters is obtained.

在理论上，沟通了两分布间的联系，藉此可利用对数正态分布参数估计威布尔分布参数，从而得到了一种新的两参数威布尔分布的估计方法。

The results show that the ratio has obvious dependence on seismic circumstance and follows a lognormal distribution.

结果表明，不同超越概率水准的地震危险性分析结果的比例关系对地震环境具有明显的依赖特征，且总体上服从对数正态概率分布。

For restricting the probabilities of two types of errors, the fuzzy hypothesis test under lognormal distribution is studied with crisp data and fuzzy hypotheses.

在样本数据精确，统计假设模糊的情形，以控制出现两类错误的概率为目的，研究了对数正态分布下的模糊假设检验问题。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。