?宽频带环形器

... broad band cable 宽频带电缆 broad band circulator 宽频带环形器 broad band coaxial frequency meter 宽带同轴频率计 ...

?宽波带循环器

... broad band amplifier ==> 宽频带放大器 broad band circulator ==> 宽波带循环器 broad band filter ==> 宽带滤波器 ...