Abstract The paper gives a circuit of second band active filter ? made of secondary current transmitter, It not only is of the function ? of the voltage filter, but also the current one.是什么意思_Abstract The paper gives a circuit of second band active filter ? made of secondary current transmitter, It not only is of the function ? of the voltage filter, but also the current one.在线翻译_英语_读音_用法_例句