cold on-column injector

例句：

1. 1.The cold on-column injector is used to inject liquids into the body.
   冷柱式注射器用于将液体注入人体。
2. 2. The medical team used a cold on-column injector to administer anesthesia.
   医疗团队使用冷柱式注射器进行麻醉。
3. 3. During surgery, the surgeon uses a cold on-column injector to inject medication.
   在手术过程中，外科医生使用冷柱式注射器给药。