pulse-phase

例句：

1. 1.During the pulse phase, the heart rate increases significantly.
   在脉冲阶段，心率显著增加。
2. 2. The researchers found that the pulse phase was crucial for the growth of the plant.
   研究人员发现，脉冲阶段对植物的生长至关重要。
3. 3. The pulse phase is a critical period for the development of the immune system.
   脉冲阶段是免疫系统发展的关键时期。