spinometer

例句：

1. 1. The doctor uses a spinometer to check the patient's blood pressure.
   医生使用旋转式血压计来检查病人的血压。
2. 2. The plethysmograph measures changes in blood volume during exercise.
   脉搏描记器测量运动过程中血液体积的变化。
3. 3. The plethysmograph is used to monitor the patient's heart rate and blood pressure.
   脉搏描记器用于监测患者的心率和血压。