1)  logarithm phase response
对数相频特性
2)  logarithmic phase frequency response curve
对数相频特性曲线
1.
Through composed of each typical links,the logarithmic phase frequency response curve for usually open-loop systems can be replaced by regular fold lines and the traditional method for the process is simplified,the velocity of the plotting logarithmic phase frequency response curve is fast.
通过各典型环节近似线的组合,使一般开环系统对数相频特性曲线可近似用有规律的折线取代,大大简化了传统画法中的叠加过程,提高了相频特性曲线的绘制速度,具有一定的应用价值。
2.
In this paper, a simple method of plotting logarithmic phase frequency response curve for open-loop systems is advanced.
文章给出了绘制开环系统对数相频特性曲线的简便方法。
3)  logarithm
对数
1.
Trial-producing logarithmic tapered roller of railway bearing;
对数型铁路轴承圆锥滚子的试制
2.
A Discussion On the Rationality of the Derivation of Logarithm;
试论对数求导法的合理性
4)  logarithmic and exponential circuit
对数反对数电路
5)  logarithmic transformation
对数变换
1.
On the basis of calculation and analysis of statistical parameters of measured monthly rainfall sequences of thirty-three years in Guangzhou area, performs logarithmic transformation of the monthly rainfall sequences, and develops a stochastic simulation model of monthly rainfall by the first order AR(P) model.
在计算与分析广州地区33年实测月降水量序列统计参数的基础上,将月降水量序列进行对数变换,采用一阶AR(P)模型建立了月降水量随机模拟模型。
2.
A new image fusion method is proposed on the basis of combining Brovey transform with logarithmic transformation for intensity modulation.
分析了的Brovey变换融合算法,提出了一种新的基于Brovey变换、对数变换亮度调整的图像融合方法,试验数据的对比和分析证明了其保留多光谱影像的光谱信息。
6)  logarithmic spiral
对数螺线
1.
Calculation and Analysis of the Contact Strength of Logarithmic Spiral Profile Connection;
对数螺线型面联接接触强度分析与计算
2.
However, logarithmic spiral can be used to substitute for the Archimedes curve to solve such problems and guarantee the stability of cutter machinability.
若改用对数螺线作为铣刀铲背曲线,则克服了阿基米德螺线的不足。
3.
The automatic generation of logarithmic spiral is achieved by means of the language of VBA embedded in AutoCAD.
提出铲齿成形铣刀齿背曲线的最佳线形应是对数螺线,而后运用AutoCAD的内嵌编程语言VBA,实现了对数螺线齿背曲线的自动生成。
参考词条
补充资料：相频特性
分子式：
CAS号：

性质：在复平面上以频率特性G(jω)相位φ(ω)为纵坐标，频率为横坐标的图称相频特性。

说明：补充资料仅用于学习参考，请勿用于其它任何用途。