查询词典 spheroidal harmonic function

A set of FTD harmonic drive with transmission ratio 100 and involute tooth profile is development by using the method presented in this dissertation, and by the meshing law experiment and the kinetic accuracy comparison experiments between two kinds of harmonic drive, the correctness of relative theory in this dissertation is testified further.

利用本文提出的方法，成功地研制出具有渐开线齿廓、传动比为100的四齿差谐波齿轮传动装置，通过对其啮合规律的测试和两种谐波齿轮传动运动精度的对比实验，进一步证实了本文有关理论、方法的正确性。

The dependence of the harmonic generation on the parameters of laser and plasma are systematically analyzed. Some discussion on the pathway to improve the ratio of the harmonic power to the pump laser is given.

首次研究了超强激光在电子-正电子等离子体中激发的相对论相干谐波辐射，发现其特性强烈依赖于准静态的外加磁场或自生磁场。

In the HVDC engineering, it will produce a series of harmonic which than the fundamental frequency of power grid, and the harmonic have adverse effects with the power systems, equipment and power grids.

中文摘要：摘要：在高压直流输电工程中会产生一系列大于电网基波频率的谐波，而谐波的存在会对电力系统、设备及电网造成不良影响。

With the idea of finite approximation, we study a new solution method for the satellite altimetry problem. Our result shows that if the continental part of the earth is sphere cap, then the solution of satellite altimetry problem can be transformed into a linear system of equations with variants of the coefficients of spherical harmonic series. We prove that the linear system of equations is separated about the orders of spherical harmonic series.

研究了球界面下卫星测高问题的解法，利用有限逼近方法得到了下列结论：若陆地部分是球冠，则卫星测高问题的解可以转换成关于球谐级数位系数的线性方程组，并且位系数的阶和次是以分离形式出现的，从而确保该解法具有实用意义。

A real signal can be fitted by a harmonic signal series to calculate the amplitude spectrum and phase spectrum.The relationship between the coefficient,phase angle of the harmonic signal and the amplitude spectrum,phase spectrum of the bispectrum is calculated by Fourier transform.

一个实信号可以用一个谐波信号序列来拟合，计算实信号的双谱，通过Fourier变换推算出谐波信号的系数和相位角与实信号双谱振幅谱和相位谱之间的关系，可以实现信号重构。

For example, although the fundamental of a trumpet is centred around 1200Hz, it generates strong harmonic components beyond 8kHz for the upper notes, with the implication that the harmonic series continues well into the ultrasonic region.

举个例子：虽然小号的中心频率在1200Hz左右，但它可以演奏在8KHz左右的高音，并可衍生出超声波范围的泛音。

The author develops a set of computing software about harmonic synthesis and harmonic analysis based on the methods this thesis puts forward.

以本文提出的理论和建立的数学模型为基础，编制了一整套重力场球谐综合与调和分析计算软件。

On the basis, this paper provide two harmonic current detect methods, and do deep research on the using zero current divided method to achieve harmonic current and instantaneous reactive current real time detecting method.

在此基础上，提出了两种基于该理论的谐波电流检测方法，并对采用零线电流分离法实现的谐波电流及瞬时无功电流的实时检测方法进行了深入研究。

Active power filter ; instantaneous harmonic current detection ; harmonic measuring ; virtual instrument ; LabVIEW

有源滤波器；瞬时谐波电流检测；谐波测量；虚拟仪器； LabVIEW

The paper introduces an improved harmonic and reactive current detecting method based on there-phase reactive current using instantaneous reactive power theory. By using matlab, simulation model is built, and the results show that this model can exactly detect harmonic and reactive current in time and it is feasible in DSP system.

本文在三相瞬时无功功率理论的基础提出了一种改进的单相无功电流检测算法，并建立了仿真模型，仿真结果表明：该算法可以及时、准确地检测出三相电路中的谐波电流和无功电流，同时也验证了此算法在DSP系统中的可行性。

Who? I never heard of him, Paul said, before asking teammate James Posey if he had heard of him.

赛后，科比说，他一直都是一名非常出色的射手，今天他打得很棒。

When I joined the company, I rotated around the different sections.

我加入这个公司时，轮换过几个不同的部门。