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- 空频多普勒OFDM编码space-frequency-Doppler coded OFDM
- 空频编码space-frequency coding
- 分布式空频编码distributed space-frequency coding
- 清空empty
- 空回backlash
- 非相干空频编码noncoherent space-frequency coding
- 频数frequence
- 盘空circle or whirl in the air
- 主频dominant frequency
- 倍频frequency doubling
- 编码OFDMeoded-orthogonal-frequeney-division-muhiplexing (COFDM)
- 占空比dutyfactor
- 载频carrier frequency
- 卖空oversell
- 分频frequency demultiplication
- 排空emptying
- 分频器frequency demultiplier
- 青空hyaline
- 频点frequency point
- 留空leave a blank
