beat pulse

• 拍频脉冲

beat pulse的用法和样例：

例句

1. In these nonuniform fields the coil voltage caused by the excitation of an RF pulse rapidly decays to zero, but it can be recovered some time later by applying a second pulse.
   在不均匀磁场内，射频脉冲导致的电波很快会消失，但如果隔一段时间后再提供第二次脉冲，又会重新出现。