This paper investigates the dielectric properties of (Na0.5K0.5Bi)0.5TiO3 crystal at intermediate frequencies (1kHz≤ f ......

We have studied the propagation dynamics of ultrafast electron pulses by using an improved mean-field model,in which the......

利用理论分析和数值计算的方法研究了矩形波导内均匀电流密度的带状电子束模型的空间电荷场，给出了该带状电子束模型的空间电荷场的......