然而近代电子学对调谐的频率范围很宽的带通放大器提出很多要求。

There is a great deal of demand in modern electronics, however, for bandpass amplifiers .

youdao

然而近代电子学对调谐的频率范围很宽的带通放大器提出很多要求。

There is a great deal of demand in modern electronics, however, for bandpass amplifiers .

youdao