spirograph

A measuring instrument used to record the depth and speed of breathing movements.

• 🇨🇳一种用于记录呼吸运动的深度和速度的测量仪器；也指用齿轮和笔绘制出复杂曲线图案的绘图玩具。

1. Medical instrument C1 formal medical

   A device used to measure and record the volume and speed of air inhaled and exhaled by the lungs.

   • The doctor used a spirograph to assess the patient's lung function.
   • Spirograph results can help diagnose conditions like asthma.
   • The technician calibrated the spirograph before the test.

   🇨🇳医用仪器

• spirographs plural form
• spirographs' possessive plural form
• spirograph's possessive singular form