衰减常数

Furthermore, we separate the contribution from the leakage and cutoff effect to the attenuation constant, and then deduce an expression to determine the leakage in the reactive region.

根据该准则我们还进一步分离出泄漏效应和截止效应各自对衰减常数的贡献，并推导出在截止区内表征辐射能力大小的表达式。

Two useful formulae for calculating the attenuation constant of conductor loss for TEm0 and TE0n modes of the rectangular waveguide are derived, and the loss characteristic in the rectangular waveguide is analyzed and computed.

根据横向谐振原理和微扰理论，本文提出了一种分析非理想波导损耗特性的新方法，推导出了一组计算矩形波导TEmO和TEOn模导体损耗的衰减常数公式，并分析计算了矩形波导的损耗特性。

By using this method, the angular frequency, amplitude, initial phase angle, decay constant of each component in transient voltage and/or current waveforms can be precisely extracted. Also, all other kinds of transient procedure can be analyzed by this method. Thirdly, a new definition of generalized instantaneous reactive power and generalized instantaneous reactive current in dq0 coordinates under any nonsinusoidal and unbalanced three-phase circuit is proposed for the first time. The detection and compensation method for different instantaneous reactive currents are also concerned.

本文首先提出了用于快速高精度频谱分析的一种改进快速傅立叶变换方法，该法具有速度快、精度高、抗混迭、不受采样定理约束、可以分析出谐次大于N／2的频谱系数等特点，可方便地应用于电力系统谐波分析及其它各类频谱分析；然后提出了基于非线性最小二乘优化法的电力系统暂态波形分析方法，可准确求出电力系统暂态电压、电流波形中各个分量的角频率、幅值、初相角及衰减常数，并可广泛应用于各类暂态过程波形分析。

Compared to the experimental measurements, good agreement is obtained near threshold region. It is shown that the fluctuations of the fundamental and second harmonic light in the laser field decrease as the cavity decay constant increases.

研究结果表明，激光场基波和二次谐波的涨落随空腔衰减常数的增大而减小；当激光场中含有乘性噪声时，乘性噪声能增强基波的涨落，同时抑制二次谐波的涨落。

With increasing of the noise strength, the height of the current peaks will decrease, and the width will increase: a similar change will appear when we increase the decay constant of the noise.

随噪声强度的增加，电流共振峰宽度增加，高度降低；增加噪声衰减常数会有类似现象发生。

Decay constant k of Surface Dynamics of the modified surface can be calculated using the measurement results of the contact angle and the angle - dependent XPS, being a probe, k values can be used to characterize the surfa...

通过PET表面的接触角及F/C比的测定，计算出表面动力学衰减常数k，三种测试方法得到的k值都可以用来表征碳氟等离子体处理PET的表面动力学行为，其中混合气体的k值最小。

The prompt neutron decay constant was measured by using reactor noise technology at delayed criticality for 300# pool research reactor.

利用反应堆噪声分析技术测量300#池式研究堆缓发临界下的瞬发中子衰减常数。

Contact angle ; angle - dependent XPS ; CF4/CH4 plasmas ; decay constant k of surface dynamics

接触角；变角XPS ； CF_4/CH_4等离子体；表面动力学衰减常数k

From the results it is found that the high-frequency fall-off constants for small and large earthquakes are different.

我们注意到小震和大震的高频衰减常数是不同的。

Studied the mechanism of interior loss factor of structral subsystems and accoustic subsystems. Studied the composing and methods of calculating interior loss factor of some normal subsystems like beams and plates. And analysised how to get the acoustic subsystem interior loss factor from sound absorption coefficient and air attenuation coefficient while no actural model of vehicle to test.

三、分析结构元件和声场内部损耗因子机理，研究将SEA方法应用到车辆系统时对于一些常见梁板子系统的内部损耗因子的构成和计算方法，以及在没有实际车型无法进行实测时，根据表面吸声系数和空气空间能量衰减常数进行理论计算声腔内损耗因子的方法，并利用SANTANA2000车型的实例进行实测对照。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。