振幅

Using natural frequency ratio and damping ratio as design variables, constructing an objective function with the peak values of dynamic magnification factor and the dynamic magnification area of the main system in the whole frequency band, the optimization problem is built.

建立了以固有频率比和阻尼比为设计变量，以振幅动力放大系数函数的多个峰值和整个宽频带下面积构造目标函数的优化问题。给出了两个自由度减振器参数的优化计算实例。

The influences of both geometric and physical sources on the atmospheric retrievals were analyzed briefly.

研究结果表明，深入开展GPS掩星技术振幅反演的研究是一个值得注意的课题。

It was observed that the background of internal friction for some weak adhesives, e. g., phenyl salicylate, water glass mixture, etc. seems to be neither negligible nor constant value which is dependent on such factors as their temperature, thermal stress, time, dryness and strain amplitude, similar to that of dislocation damping.

对于水杨酸苯酯，水玻璃混合剂之类弱粘结剂所造成的背景内耗既不能忽略也不是常数，它与粘结层温度、热应力、时间、干燥程度和应变振幅等因素有关。

More recently, singular optics has been extended to polychromatic cases by Professor Wolf and his co-workers, in which they have showed that drastic spectral changes occur in the vicinity of intensity zeros in the focal region of polychromatic, spatially coherent, converging spherical waves, i.e. the spectrum is redshifted at some points, blueshifted at some other points, and is split into two peaks elsewhere.

最近，Wolf教授和他的同事们指出：在多色空间相干会聚球面波焦点区域振幅等于零的点附近会发生剧烈的光谱变化，即在一些点处光谱为红移，在另一些点处光谱为蓝移，在其它点处光谱则分裂为双峰结构。

Rectifiers also find a use in detection of amplitude modulated radio signals.

整流器还发现一个使用中的振幅调制无线电信号的检测。

Based on the model calculation,an FAPP ventilation system was madein Beijing Poultry Breeding Company.Through running test and a series ofphysical and chemical characteristic measurement,the distribution of flowspeed in length,and breadth was given.The average temperatureand rel-ative humidity,the amplitude of T and RH per day of 30 days in winter,and instantaneous T and RH in 24 hours wre measured in FAPP house,com-paring house and outside,the result shew that FAPP ventilation system wassuperior to comparing house.The dust concentration and microrganism con-tent were also measured in the rearing piriod of poultry,the value in FAPPhouse was junior to comparing house.

在模拟结果的基础上，设计了一套FAPP通风系统并在北京市种禽公司原种后备场种雏舍进行了实际运行试验和一系列的理化特性参数的测试，试验给出的正压管道式送风舍纵轴方向及横截面上气流速度的分布规律与模拟结果相吻合；通过对FAPP舍、对照舍及舍外冬季30天的逐日平均温湿度、温湿度振幅以及24小时瞬时温湿度的测试分析，显示了FAPP通风系统在冬季通风中明显优于负压通风系统；在雏鸡全周期的饲养过程中还对舍内粉尘与微生物的含量进行了测试，FAPP舍的值明显低于对照舍，这一结果为FAPP通风系统的推广应用提供了实验依据。

One is similar to that of Partons (2003) report with the growth process oscillateing at the same frequency and amplitude. The average period of this kind oscillatory growth is 24 ? 1 s. The other is a new pattern.

一种与Parton(2003)报道的周期性振荡生长行为相似，每个振荡的周期与振幅基本相同，平均周期为24±1秒。

According to the characteristics of field dis tribution, a method to abstract quadrature component and amplitude of vertical magnetic field in near-field zone is proposed. Based on the dual-fre. quency combi nation wave theory, apparent resistivities with various forms at center and any point in near-field zone of current loop on stratified earth are defined.

根据场分布的特征，提出了在近区提取磁场垂直分量的正交部分和磁场垂直分量的振幅作为研究对象的方案；根据双频组合波理论，利用它们所对应的双频差，给出了载流回线中心点和近区任意点的视电阻率不同形式的表达式。

In our study, multiple temperature-independent points and accompanying oscillations are observed in the longitudinal resistivity between the low-field insulator and the quantum Hall liquid. The amplitudes of these oscillations can be well described by conventional Shubnikov-de Haas theory, and our experimental results therefore support the existence of an intermediate metallic regime between the low-field insulator and quantum Hall liquid.

在此研究中，我们发现在低场的绝缘态与高场的量子霍耳态之间，纵向电阻率有多个不随温度变化的交点，而此交点所在的位置与其所伴随振荡的振幅可以利用Shubnikov-de Haas 理论解释，因此由我们的实验结果可以看出，在低场绝缘态与高场量子霍耳液体态之间，的确存在一个过渡的金属态。

The structure of instrument, theoretical calculation and parameters testing were investigated. Firstly, a DOAP was designed, in which the light path was in the same plane. This was calibrated by known polarization that combined a polarizer with one quarter-wave plate.

首先，设计了一个光路在同一平面上的分振幅斯托克斯参量测量装置，用偏振片和1/4 波片组合产生已知的偏振态来定标该装置，用4 个性能一致的光电探测器实现快速测量光束的斯托克斯参量。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了