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。
2.
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。
3.
Speech treatment included audio discrimination , behaviour training , lip phone training , aspirates and fricatives training , tongue lolling out , comprehensive training , et al 语音治疗采取辨听训练、行为治疗、唇音训练、送气音和摩擦音训练、舌外伸训练和综合训练等方法，由浅入深，由筒单到复杂。
