发射频带响应
transmitting band response
超宽带频率响应测量
Wideband frequency response measurement
带频率门限的Stide T-Stide算法
Time-delay Embedding with Frequency Threshold T-St
带内音频振铃装置
in band voice frequency signalling device
机载频带转移
on-board frequency band translation
带内导频单边带
pilot tone-in-band single sideband