查询词典 attenuation

Mathematics model of dielectric under uniform electric field is built up, and total current is separated into three parts such as conductive current, instantaneous current and relaxation polarization current, then polarization and depolarization of linear and non-linear dielectric are simulated under step excitation, the results show that nonlinearity of non-linear conductivity is reflected by measuring surface potential attenuation during the process of self-discharge of non-linear dielectric.

论文首先对处于均匀电场下的电介质进行电路建模，把电介质的总电流分为电导电流、位移极化电流和松弛极化电流三部分来分析，然后以此为基础利用Matlab软件中的Simulink平台对直流阶跃激励下线性和非线性绝缘介质的极化和退极化过程进行了仿真，结果表明可以通过测试非线性绝缘介质自放电过程的表面电位衰减来反映其非线性电导的非线性程度信息。

The rolloff is usually expressed as attenuation per unit interval, such as6 dB per octave.

衰减截止频率通常被表示为单位音程的衰减，比如每一个八度降低6分贝。

The attenuation of HR response was prior to depressor response and that of responses induced by myelinated fibers was prior to by unmyelinated fibers.

阿托品用药后，各周龄SHR与WKY大鼠的HR效应差异被消除，但32周龄SHR与WKY大鼠的MAP效应的差异仍存在。

Objective: Study the influence of parameters such as attenuation coefficient, velocity of sound, and temperature of medium on focusing sound field.

目的：研究声衰减系数、声速、温度等媒质参数对声聚焦的影响。

Ultrasonic wave pulse technique was used to investigate the velocity of sound and attenuation of the damaged samples PBXN-S.

采用超声探伤仪对损伤材料PBXN-5的声速和声衰减进行了测量。

The first kind of method includes voltage divider of a double resistor and an output amortize; The 2nd kind of method includes an inverter that has very big attenuation.

第一种办法包括一个双电阻分压器和一个输出缓冲；第二种办法包括一个存在很大衰减的反相器。

By the attenuation of the scattering factor, UV reaching the Earth′s surface is 23.89 W·m-2 which contributes about 62.55% of surface UV.

华北地区受水汽因子和散射因子影响损失于大气中的UV分别为19.30、35.31 W·m-2，这一能量损失表现出明显的季节变化和地区差异。

The inspection for [3 改为of] wave trap combined the high frequency filter characteristics, is often judged by using to test the impedance of the wave trap, the echo depletion and the attenuation.

对阻波器、结合滤波器的高频特性检查，在实际应用中常采用测试阻波器的阻塞阻抗以及测量滤波器的回波损耗和工作衰减来判断好坏。

Objective To understand the emission rate and the attenuation rule of formaldehyde in the artificial woodiness boards for sell in China and to study the efficiency of formaldehyde-eliminator.

目的了解目前市售木质人造板甲醛的释放量，研究不同板材甲醛的衰减规律以及甲醛消除剂的效果。

Because of the features of current of breaker: the range is wide , the signal of short circuit containing the direct circuit that is attenuation signal, when CT is saturation, the signal of current is aberrational, improved Fourier algorithm and maximum slope algorithm are chosen to calculate the current on the base of theoretic analysis.

根据断路器开断电流信号变化范围宽、短路电流信号含有直流衰减分量、当电流互感器深度饱和时，电流信号发生畸变的特点，在理论推导和分析的基础上，综合采用了并联补偿傅氏算法和最大斜率算法作为监测单元中不同范围内的电流信号的处理算法。

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。