衰减

According to the forward and inverse results of synthesi zed seismic records, our Q filtrating operator of the depth domain is consis tent with the seismic laws in the absorbing media, which not only considers the effe ct of the media absorbing of the waves, but also fits the deformation laws, name ly the frequency dispersion of the body wave.

在深度域的Q滤波算子符合地震波在衰减介质中的传播规律，不仅考虑了介质吸收对地震波振幅的影响，而且还保证了所造成的波形畸变满足因果规律，即地震体波具有某种频散性质。

In order to enhance the convergence rate of recovered signal, we apply the decay rate approach to design the T-S fuzzy controller.

为了减少还原明文信号的时间，提出衰减速率的概念，使系统稳定时间缩短。

Secondly, oscillation energy function of inter-area mode oscillation is defined which can be regarded as a measure of the deflection away from the steady state position during dynamic oscillation period.

分析了功率振荡过程中能量函数的变化，提出了衰减振荡能量的阻尼控制策略，目的是使系统暂态能量以最快的速度归零，即回到故障后的稳定平衡点。

Optical Switches and Variable Optical Attenuators are key components in fiber-optic communication systems and Micro-Electro-Mechanical Systems is a promising OSW technology.

光开关和可变光衰减器是光通信系统中的关键器件，而微电子机械系统技术是一种具有发展前景的光开关技术。

Friction Material Fade – When pads reach high temperatures they can sometime "outgas" chemicals that redeposit themselves on the surface of the brake pad.

摩擦性材料衰减——当刹车片达到高温时有时会"蒸腾"出一些化合物并再次沉积到刹车片的表面。

Propagation rules of near ground sources are analyzed carefully, consist of several influent factors: propagation attenuation, reflection on the ground, temperature grads and atmosphere overfall, etc.

本文详细分析了近地声源的传播规律，包括传播衰减、地面反射、温度梯度和大气湍流等影响因素。

Meanwhile, we proposed the signal data overflow handling algorithm to deal with the possible missile target missing caused by the infrared interference, and the infrared signal flicker because of the infrared attenuation in atmosphere.

简要介绍了反坦克导弹红外测角仪的信息处理系统组成原理，讨论了红外测角仪抗红外干扰的信息处理方法，导弹目标信号的确定要通过真假红外信号的模式识别和航迹判别处理等才能最终确定，同时对由于大气红外衰减造成的红外信号闪烁以及其它干扰造成的导弹目标丢失情况，设计了信号数据溢出处理模块。

Further, compared with the standard response spectrum of our country, the results showed that the values of the elasto-plastic acceleration response spectra in the long period cycles are overhigh, damping attenuation coefficients are also larger.

进一步比较弹塑性反应谱和我国规范得到的反应谱，结果显示规范的加速度反应谱在长周期段谱值过大，阻尼衰减系数也较大。基于单质点弹塑性地震分析的结果，在我国规范反应谱公式的基础上提出的隔震结构弹塑性反应谱公式。

For intramolecular electron transfer reactions in solution,the fluctuations of the intramolecular vibrational modes are much faster than that of solvent mode.Thus,the reaction-diffusion equation is commonly used to describe the motion of solvent,with a sink function to treat the vibrational high-frequency mode.Based on this theory-so -called the Sumi-Marcus theory,we proposed an imaginary-time split operator approach to solve the reaction-diffusion equation.The approach is applied to evaluate the intermolecular ET rate between oxazine 1 and N,N-dimethlaniline.By measuring the two average survival times of the donor state probability and the rate constant in long time limit,the full kinetics of the ET is revealed with a variety of sink functions.

对于扩散控制的溶液中的电子转移反应，分子内振动模的运动比溶剂运动快很多，Sumi-Marcus理论提出用反应扩散方程(reaction-diffusion equation)处理溶剂的扩散运动，而分子内的振动用sink函数来表示，我们基于此理论发展了用虚时间分裂算符的方法(imaginary-time Split operator approach)解反应扩散方程，并将其应用于嗪1(oxazine 1，OX1)和N，N-二甲基苯胺分子之间的电子转移反应，Sink函数采用几种不同的微扰表达式，通过计算得到给体几率衰减的两种平均速率和长时间极限下的速率常数，揭示了该体系电子转移过程中的一些动力学性质。

By analyzing and solving the exterior ballistic equations of shots, the paper gives a method for computing the parabolic trajectory,flying velocity curve and rudimental energy curve of shots.

本文通过分析与求解霰弹子外弹道运动方程，给出计算圆球形霰弹子抛物运动弹道曲线、速度衰减曲线及残留能量曲线的方法。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。