对数

In addition, the logarithm transform changes its statistical characteristic, so we must adjust the mean in the process.

另外，图像对数变换后的统计特性发生变化，需要在变换过程中加入均值调整的过程。

Can occur if you try to calculate the square root or logarithm of a negative number.

如果你试着计算否定数目的正直根或对数，能发生。

The security of all these algorithms is based on the difficulty in factorizing large integer and computing discrete logarithm.

这些方案的安全性都是基于大数分解的困难性和有限群上计算离散对数的困难性。

The results of comparison prove that this new digital signature based on discrete logarithm is more effective and secure than the others.

比较结果显示基于离散对数的数字签名方案比其他的数字签名方案效率要高，而且更安全。

The minimum deflection rate, applied load and fracture time in logarithmic coordinates, two of them have a linear relationship at random on the base the results of FEM.

2进一步分析模拟计算的结果表明：对数形式的最小挠度率、载荷、断裂时间两两之间存在着线性关系，这种关系与单轴蠕变试验中的关系相似。

Key words: current transformer; volt-ampere characteristic test; saturation curve; logarithmic coordinates; scale

为在伏安特性曲线图中体现出铁芯饱和前电流值的细微变化，试验数据的尺度变换技巧实现了特性曲线在对数坐标中的显示和打印。

At the same time, under the condition of small strain, firstly, the secant shear modulus was always larger than the tangent shear modulus. Secondly, when the logarithmic coordinates were applied to describe shear strain, the decrease of shear modulus with shear strain could be expressed by reversed S shape curve with two inflexion points, and through analyzing and validating, the deduced equation could perfectly reflect this characteristic. Finally, different stress paths and strain areas would lead to different attenuation trends.

而且，在小应变范围内，割线剪切模量总是大于切线剪切模量；当剪切应变采用对数坐标表示时，剪切模量随着剪切应变的增加而衰减，且衰减的规律都可以表示为带有两个拐点的反S型曲线，经分析验证本文所得公式3可以对此特性进行很好地反映；但应力路径、应变范围不同其衰减幅度不同。

Logarithmic curve fitting method was used...

使用对数曲线拟合方法推导出该概率曲线的回归方程。

The numbers of new cases and the rate of incidence of malaria can be predicted by the quadratic forecast model of population and the logarithmic curve model of new cases. The general trend of malaria are gradually decreasing in Chongqing municipal.

运用人口数的二次曲线模型和疟疾新发病例的对数曲线模型能够较好的预测疟疾发病数和发病率，总体来看重庆市疟疾动态的总趋势是持续下降的。

Results show that,in the Hexi Corridor,the relationship between urbanization and total water utilization can be simulated by a logarithmic curve.

结果表明，河西走廊城市化水平与用水总量呈对数增长关系，与用水效益呈线性增长关系，与人均用水水平的定量关系则较为复杂。

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％。