injection pump plunger

例句：

1. 1.The injection pump plunger is responsible for dispensing the medication.
   注射泵活塞负责分配药物。
2. 2. The technician needs to adjust the injection pump plunger to ensure accurate dosing.
   技术人员需要调整注射泵活塞以确保准确的剂量。
3. 3. The patient's condition improved significantly after the injection pump plunger was replaced.
   更换注射泵活塞后，患者的病情显著改善。