expectoration造句
PracticeoneffectivelyexpectorationafterpneumonectomyRespirationsystem:nocough,expectoration,hemoptysis,aspirationdifficultyhistory.Influenceofvibratingsputumevacuationdeviceonexpectorationofpatientsun...
PracticeoneffectivelyexpectorationafterpneumonectomyRespirationsystem:nocough,expectoration,hemoptysis,aspirationdifficultyhistory.Influenceofvibratingsputumevacuationdeviceonexpectorationofpatientsun...