1) Froude wake fraction
傅氏伴流分数
2) Froude wake factor
傅氏伴流因数
3) Froude wake factor
傅汝德伴流系数
4) wake fraction
伴流分数
1.
The boundary element method has been used in this paper to calculate the potential wake fraction of the 8301 twin stern ship,the HS80 high speed passenger ship and large diameter to draft ratio FT8601 pushboat .
采用边界元方法对 830 1双尾船、HS80高速客船以及大径深比 FT860 1推轮共 3艘内河双桨船型的势伴流分数进行了计算 ,探讨了势伴流占总伴流的比例以及桨盘处势伴流的分布规律 ,得出了一些初步结论 。
2.
The ship performance is an important part of the construction process and ship design and the correcting methods for wake fraction scale effect is the most important essential to ship s speed forecasting.
而实船性能预估是船舶设计建造过程中重要的一环,其中关于伴流分数尺度效应的修正对于实船航速预报的精度至关重要。
5) fourier series
傅氏级数
1.
How does jitter frequency reduce EMI from the viewpoint of fourier series theory and the transient electromagnetic field theory is investigated.
从傅氏级数及空间交变电磁场的角度对采用抖频技术如何来减小EMI进行了分析。
2.
This paper discusses the relation between Fourier series and wavelet transform.
就傅氏级数和小波变换之间的关系进行较全面地讨论。
3.
This paper that is based on the Fourier Series and applies the Chebyshev polynomials wonderfuly, gives the distribution function of a randowm variable utilizing its moments, In spite of this distribution function s form in thd series, its value can calculated easily with a computer.
现以傅氏级数为基础,运用契贝谢夫多项式,给出了用随机变量的矩求其分布函数的表达式。
6) Froude number
傅氏数
补充资料:分数傅利叶转换
在数学的谐波分析领域中,分数傅利叶转换(fractional fourier transform, frft)是一种线性转换,其将连续傅利叶转换(简称「傅利叶转换」)广义化,可以想作傅利叶转换的第n个幂,这个幂不一定要是整数。因此,其可将一个函数转换到「介於」时间与频率之间的范畴。它应用於滤波器设计、讯号分析,以及相位复原(phase retrieval)与图形辨认(pattern recognition])等领域。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条