Time-frequency sequence的用法和樣例：
例句
- It is better to group pilot tones together into clumps that are equispaced in the frequency domain.
可以證明，在快時變環境下，分組且每組等間隔分佈於頻域上的導頻序列有著更好的系統性能。 - The number of frequencies used in the baseband hopping frequency hopping sequence is the same as the number of carriers in the sector.
基本頻帶跳頻的跳頻序列中的頻率數量與扇區中載波的數量相同。
