friction rubs造句

• Likewise , the stethoscope allows the examiner to detect mid systolic clicks in mitral valve prolapse and pericardial friction rubs
  同样听诊器有利于检查者发现二尖瓣脱垂时收缩中期喀喇音和心包摩擦音。
• The fibrin often results in the the finding on physical examination of a " friction rub " as the strands of fibrin on epicardium and pericardium rub against each other
  听诊时出现心包摩擦音，这是因为沉积在心外膜和心包的纤维素相互摩擦所致。