查询词典 attenuation factor

Both of them do not indicate anomaly features of coda attenuation in active volcano areas.

两者均未显示出活火山地区尾波衰减的异常特征。

In the water quality model,the attenuation coefficients of colligation are determined to be K...

北冲污水处理厂排放的"尾水"将是水污染治理的重点，也是改善桃花江水环境质量的关键。

This paper puts forward to a new way of generating colored noise using a novel all-filter phase digital filter. Compared to traditional FIR filter, the colored noise generated by using this filter has fewer spectrum leak, higher stop band attenuation.

本文提出用全相位数字滤波器这种新型滤波器滤波白噪声产生有色噪声的方法，这种方法比用传统FIR滤波器产生的有色噪声频谱泄漏少，阻带衰减功率大等优点。

A lens and a paraboloid nozzle were used to focus pulsed CO2 laser and generate impulse.Effects of single pulse energy on impulse coupling coefficient was studied with a high-accuracy compound pendulum and a light figure system.Extension range of pulse energy from 5 J to 70 J was obtained through adjusting working voltage of the laser and energy attenuation of silicon combinations in the experiment.

利用透镜聚焦，抛物面喷管约束，结合复摆和光指针测量系统研究了单脉冲能量对吸气式激光推进冲量耦合系数的影响，实验中通过调节激光器工作电压和硅片衰减实现了脉冲能量5-70 J范围的有效拓展；进一步采用纳秒分幅高速相机拍摄了24 J能量下的流场纹影照片。

The result indicated:Without considering the influence of atmospheric turbulence,the visibility is higher,the beam intensity attenuation is smaller;Under the condition that only considered the atmospheric turbulence influence,wave length of transmission laser and refractive index of atmospheric structure constant have an important influence on beam intensity distribution.

结果表明：在不考虑大气湍流影响的条件下，能见度越高，光强衰减越小；在只考虑大气湍流影响的条件下，传输激光的波长，大气折射率结构常数，对激光远场光强分布具有重要影响。

The switching law is given out according to convex combination condition and the sufficient condition of the stabilization is obtained by switching among a finite number of controllers under the assumption that a single controller cannot make the systems stable and has H-infinity disturbance attenuation.

在假定每个单一的控制器均不能使系统稳定且具有H扰动衰减度的条件下，利用凸组合条件给出了切换律的设计方案，通过在有限个控制器间的切换得到了镇定的充分条件。

The experiment illustrated that water mist would suppress the PVC fire by evaporation cooling,oxygen displacement and radiant heat attenuation.After the fire was extinguished and water mist was shut off,fire might reignite after a period of time.

细水雾作为哈龙灭火剂的一种替代产品以其无环境污染、灭火迅速、耗水量低、对防护对象破坏性小等特点展示出广阔的应用前景，目前已成为国际火灾科学前沿研究热点之一[4，5]。

The attenuation correction coefficient influences correction quantity and correctable thickness.

衰减订正系数影响订正量的大小和可订正厚度。

RESULTS: Relative to the control group, the opiate-dependent group rated pleasant pictures as less arousing and showed increased corrugator activity, less postauricular potentiation, and decreased startle-elicited P300 attenuation while viewing pleasant pictures.

结果：相对于对照组，阿片类药物依赖组额定愉快图片较少引起显示增加corrugator活动，少耳后增强，降低惊跳，引起P300的衰减，一边欣赏愉快图片。

These all will produce some other effects that would strongly affect the transmission of laser signals,especially attenuation,coruscation and dithering of beam.

上述一系列效应对激光信号的传输产生巨大的影响、其中最为重要的影响效应有衰减、光束闪烁及抖动效应。

So it was last week in Selma , alabama.

上星期在亚拉巴马州塞尔马市发生的事件也是这样一个转折点。

The group also spearheads various social programs in China.

该组织还带头参与中国的各种社会活动。