pulse valve

例句：

1. 1. The heart's pulsating valve is responsible for regulating blood flow.
   心脏的脉冲阀门负责调节血流。
2. 2. In the operating room, thesurgeon uses a pulse valve to control theflow of blood during surgery.
   在手术室里，外科医生使用脉冲阀门来控制手术期间的血流。
3. 3. The pulse valve inthe ventilator helps maintain a steadyairflow during mechanical ventilation.
   呼吸机中的脉冲阀门有助于维持机械通气期间稳定的气流。