pulsing signal

例句：

1. 1. The heart's electrical activity is a pulsing signal that regulates the heartbeat.
   心脏的电活动是一种脉冲信号，它调节心跳。
2. 2.In medical imaging, pulsing signals are used to track changes in tissue.
   在医学成像中，脉冲信号用于追踪组织的变化。
3. 3.The device sends out pulsing signals to alert the user of potential danger.
   该装置发出脉冲信号以提醒用户潜在的危险。