Svc series single - phase stabilizer which are composed of contact type self - coupling voltage regulator , automatic sampling control circuit and servimotor , having the advantage such as compact size , light werght , stable and continuous voltage provision wide voltage adjustment and negligible wave form distortion Svc系列单相高精度全自动交流稳压器是由接触调压器、取样控制电路和伺服电机组成;具有输出电压连续平稳、调压范围宽、输出波形失真小和稳定可靠等优点
Svc series three - phase stabilizer which are composed of contact type self - coupling voltage regulator , automatic sampling control circuit and servimotor , having the advantage such as compact size , light weight , stable and contnuous voltage provistion wide voltage adjustment and negligible wave form distortion Svc系列三相高精度全自动交流稳压器是由接触调压器、取样控制电路和伺服电机组成，具有输出电压连续平稳、调压范围宽、输出波形失真小和稳定可靠等优点。
The followings were discovered in the simulations of undersized waveguide : when the pulse width of input signal , a gaussian packet , is rather wide , the output signal distorted little . a superluminal group velocity 3 . 21c was revealed when the wave packet crossing 50mm forbidden region 对凹陷波导（ undersizedwaveguide ）的模拟发现：输入脉冲宽度较大的高斯波包，模拟结果显示输出波形失真较小，经过计算得到电磁波包穿过长50mm的截止区时，电场的幅度衰减了- 41 . 5db ，群速度为3 . 21c 。
