Multi-frequency Band Analysis
frequency band energy analysis
absolute frequency band gap
adapted frequency band merge
adaptive time-frequency analysis
Adaptive window length time-frequency analysis
all-band frequency sweeping meter
amateur frequency band
业余频带
无线光通信(FSO)
自由空间激光通信
自由空间光通信
Assigned frequency band
compaction， frequency-analysis
corona frequency analysis
depth-frequency analysis
effective frequency band
effective observation frequency band