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The simultaneously measurements of surface electric field and Maxwell current density show that, underneath active thundercloud, surface Maxwell current density reflects the change of cloud charge sources, and is quasi-steady between lightning discharges.

利用实验观测和模式计算相结合的方法,对传导电流、位移电流和电晕电流的相对重要性作了估计。

It was presented an adaptive fault circuit selection method based on transient current .

在分析小电流接地系统单相电弧接地故障时各线路零序暂态电流特征的基础上,提出一种基于暂态电流的故障选线自适应方法。

The conclustion we obtained are: through adjusting the profile parameters of plasma density, temperature and current, and the elongation k and triangularity d which describe the plasma shape,...

自举电流分布与等离子体平衡电流分布之间的剖面准直性可以通过调整等离子体的密度、温度和电流分布参数,以及描述等离子体形状的拉长度k和三角变形因子d来获得。

CY2000 stable high-current test system or are only a computer-controlled automatic recording systems, real-time monitoring of input current waveform, but also by setting the trigger conditions×transient input current waveform.

CY2000大电流稳升试验测试系统是国内唯一一款计算机控制的自动记录系统,可实时监测输入电流波形,还可按设定的触发条件扑捉瞬态输入电流波形。

We studied trivalence chromium ion electrode reaction on three different surface state by cyclic voltammetry, discussed electrode activation influence on electrode reaction, and analysed the mechanism of electrode reaction. We discussed current efficiency during the first charge process and charge/discharge cycle performance by invariable current charge method.

应用循环伏安法考察了三价铬离子在三种不同表面状态石墨电极上的电极反应,探讨了电极表面活化处理对三价铬离子的电极反应的影响,并分析了电极反应的机理;采用恒电流充电的方法探讨铬液流电池初次充电过程的电流效率及恒电流充/放电循环的性能。

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。

A low frequency rolling bearing fault diagnosis method based on local projective noise reduction;2. According to characteristics of both the vibration signals and the stator currents when appering a fault in the rolling bearing of the induction motor,Park vector module signal of the three-phase current is calculated,and the envelope of vibration signals from the rolling bearing of the motor is analyzed.

根据感应电机轴承发生故障时的振动信号特性以及定子电流特性,求出三相电流的Park矢量模信号,并将其与电机滚动轴承振动信号经解调处理后的包络信号进行融合分析,可以从振动信号与电流信号的融合谱图中有效地提取轴承故障特征信息,并将其作为故障识别的依据。

A zero rippled input current and continuous output current Buck-Boost converter topology converter was proposed.

针对传统Buck-Boost输入输出电流断续的缺点,提出一种基于独立电感零纹波输入电流和输出电流连续的Buck-Boost变换器,详细分析了变换器的稳态工作原理。

The characteristics and applications of zero order current protection are discribed in detail in this paper.

分析了零序电流保护的特点及应用情况,提出了零序电流保护属于后备保护系列、在和其它保护方式相配合方面还应加以改进,说明了零序电流保护在发电厂和变配电系统中的重要地位。

The resonant phenomenon of Bridgeless Boost PFC with split inductor s is analyzed using experiments, simulation and equivalent circuit methods.

通过实验、仿真和等效电路模型分析方法对分立电感无桥Boost PFC电路电感电流上叠加有高频谐振电流的现象做出了详细的分析和研究,指出高频谐振是PFC分立电感与电路的寄生电容组成LC振荡回路所引起的,确定了谐振电流的路径和谐振频率的大小。

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I will endeavour to find you some assistance.

我尽力帮你找人帮忙。

At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.

起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像,后来回台湾,甚至去年在北京,居然也四处看见她的海报,才惊讶她的魅力之大。

Ah may dee:You are chinese living in a democratic country.

你是居住在民主国家的中国人吧。