broadbandn.宽频带；宽带adj.宽频带的broadband measuring宽带测量broadband RF signal宽带射频信号broadband converter[电] 宽频带变频器broadband data link宽带数据链broadband exactness宽带精度broadband radiation宽带辐射broadband character宽频带特性Broadband Streaming宽带流媒体Broadband equalizer宽带均衡器broadband switching宽带交换