foco-collimator

例句：

1. 1. The foco-collimator is used to align the patient's head during radiotherapy.
   焦点校正器用于在放疗过程中对准患者头部。
2. 2.The surgeon used a special tool called a foco-collimator to ensure accurate tissue cutting.
   外科医生使用一种特殊的工具，称为焦点校正器，以确保精确的切割组织。
3. 3. During the procedure, the doctor carefully adjusted the foco-collimator to avoid damaging the surrounding tissues.
   在进行手术时，医生小心翼翼地调整焦点校正器，以避免损伤周围的组织。