查询词典 harmonic analysis

Comparing with the conventional algebraic method, with Circle Diagram Analysis it is easier to obtain and understand some conclusions of Fourier algorithm, for example, the phase and the amplitude of a certain order harmonic.

与代数方法相比较，采用圆图分析法更容易得出和理解富立叶算法的一些结论，如可一次求出某次谐波的幅值与相位。

The convergence theorem of the presented ANN algorithm was proposed and proved, and the simulation cases of harmonic analysis by use of the presented algorithm were given.

仿真结果表明，文中提出的谐波测量方法的计算精度极高，且计算量较小，因此在电力系统谐波测量中有较高的应用价值。

Firstly, this paper researched the mechanism of tubing string vibration when natural gas flows in horizontal well tubing string. Secondly, established whole tubing string undamped and damped vibration system model according as reasonable assumption data of one horizontal well. Apply finite element analysis software to calculate tubing string natural characters, simple harmonic dynamic behavior of stable gas production and nonlinear dynamic behavior. Finally, this paper carried out the safety varied frequency of gas well and the method of vibration reduction.

本文首先从理论和数值模拟研究了天然气在水平井油管柱内的流动诱发油管柱振动的机理，然后在合理假设的基础上结合某水平井数据建立了全井段油管柱无阻尼和有阻尼振动系统模型，利用有限元软件计算分析了油管柱固有特性、稳产简谐动力学响应和非线性动力学响应，针对油管柱振动规律提出了天然气安全调节频率范围和减振措施。

For nonlinear harmonic oscillators systems of coordinate coupling and momentum-coupling, one obtains a group differential equations for physical parameters about flow parameter by the numerical analysis method, one finds this method can diagonalize the Hamiltonian.

通过数值分析物理参数随流参数变化规律，给出了对角化的哈密顿量。

At last, we present some new progress on harmonic analysis method for partial differential equations.

与此同时，还给出了偏微分方程的调和分析方法这一领域的最新研究进畏。

The double speed synchronous sampling method is introduced to harmonic analysis,and the corresponding algorithm model is deduced.

给出了双速率同步采样法用于谐波分析的算法模型，仿真结果表明，与普通同步采样算法相比，本方法具有更高的精度。

Earth tilt tide ; harmonic analysis ; tidal wave ; amplitude factor ;γ value anomaly

倾斜固体潮；调和分析；潮汐波；振幅因子；γ值异常

Research on the harmonic analysis of arc furnace electric system based on frequency domain method is made.

文中对电弧炉电气系统谐波分析的频域方法进行了研究。

Research on harmonic analysis of arc furnace electric system based on frequency domain method.

电弧炉电气系统谐波分析的频域方法研究。

The problem of unbalance load on pulse generator is discussed by means of methods of analysis on harmonic electromagnetic moment during stable and transient state.

剖析了不平衡负载及缺相极端情况下，发电机各次稳定和瞬变谐波电磁力矩对转子系统的影响。

After explaining total design of automated test system for microcircuit , the thesis introduces GPIB standard .

文章在说明了微电路模块自动测试系统的总体设计后，对GPIB标准进行了介绍。

He interceded in my behalf.

他替我说情。