查询词典 harmonic wave

The expression for radial wave function of a two dimensional harmonic oscillator is derived through an integral formula of general Lagurre function.

本文用广义Laguerre多项式的母函数表达式，证得文献〔1〕中，计算ρn次幂的类氢原子径向波函数Jd平均值的通式。

With the 339A you get a total Harmonic Distortion Analyzer, True RMS Voltmeter, and Sine Wave Oscillator.

随着339A ，您会获得一个总谐波失真分析仪，真有效值电压和正弦波振荡器。

The generated optical millimeter-wave signals have very high quality with an optical carrier and harmonic distortion suppression ratio of more than 38 and 36 dB at 40 and 72 GHz, respectively.

产生很纯的微波光讯号，40 GHz 和 72 GHz抑制载波讯号高达38 和 36 dB 。

Any complex wave can be resolved into a series of simple harmonic waves with different frequencies.

VM14-3复合波任何非简谐的复杂的波都可看成是由若干个频率不同的简谐波叠加而成的。

The Fourier analysis method is applied to decompose the air gap magnetic density into the basic spatial component and a series of harmonic components and wave shape eigen coefficient of air gap magnetic field are calculated.

通过对气隙磁场的分析可以计算出转子表面损耗，进而计算出转子的温度场分布。

Under a series of harmonic and earthquake wave loadings,the joint opening behaviors and acceleration responses of the arch dam model were tested.

通过振动台输入谐波和地震波对模型拱坝进行动力试验，并运用拱坝非线性分析有限元程序ADAP - 88来进行计算比较，试验结果验证了数值模型的可行性，揭示了带横缝拱坝在地震荷载作用下的反应规律。

These systems include neutral particles with general spin and magnetic moment moving in an arbitrarily varying uniform magnetic field or in the field of a circularly polarized electromagnetic plane wave, the generalized time-dependent harmonic oscillator, and Heisenberg model in a rotating magnetic field.

包括具有一般自旋和磁矩的中性粒子在任意时变均匀磁场中的运动、在圆偏振平面电磁波场中的运动，一般含时谐振子体系，旋转磁场中的 Heisenberg 模型等。

The principles of the second harmonic generation in the nonlinear crystal polarized by the fundamental wave and the sum frequency generation have been studied.

利用非线性光学耦合波方程，讨论了非线性晶体受基波辐射极化产生二次谐波以及和频产生的机理。

So, nonlinearity of non-linear dielectric can be reflected by the radio of harmonic to fundamental wave.

因此，可以用谐波分量与基波的比值反映非线性绝缘介质的非线性程度。

Numerical Simulation and Experimental Investigation on A Thermoacoustic Engine with Tapered Resonance Tube A symmetrical standing-wave thermoacoustic engine with tapered resonance tube has been numerically simulated with liner thermoacoustics. The simulation shows that using tapered resonance tube in thermoacoustic engine could decrease the velocity amplitude and lower the total acoustic power loss in the resonance tube. The experimental results indicate that the harmonic was suppressed effectively by using the tapered resonance tube, and the pressure ratio was improved.

采用锥形谐振管的热声发动机的数值模拟和实验研究利用线性热声理论，对一台采用锥形谐振管的驻波型热声发动机进行了数值模拟，发现采用锥形谐振管可有效降低工质气体的速度振幅，进而减小在谐振管中声功率的损失；与一台在相同频率下工作的采用等直径圆柱谐振管的驻波型热声发动机进行了实验对比，结果表明，在使用锥形管作为谐振管的热声发动机系统中，谐振管中的非线性效应得到了明显的抑制，热声发动机在基频模式下稳定运行，压比增大而加热温度降低。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。