dot-frequency

例句：

1. 1. The dot-frequency of the signal is critical for its detection.
   信号的点频对于其检测至关重要。
2. 2.In this experiment, we measured the dot-frequency distribution of the particles.
   在这个实验中，我们测量了粒子的点频分布。
3. 3. The dot-frequency spectrum shows a peak at around 100 Hz.
   点频谱显示一个峰值在大约100 Hz处。