hysteresisograph

例句：

1. 1. The doctor used the hysteresisograph to monitor her labor progress.
   医生使用子宫收缩图来监测她的分娩进展。
2. 2. During labor, the hysteresisograph was crucial in determining the baby's birth weight.
   在分娩期间，子宫收缩图对于确定宝宝的出生体重至关重要。
3. 3. The hysteresisograph helped doctors to better understand the fetal heart rate during labor.
   子宫收缩图帮助医生更好地理解产程中的胎儿心率。