Observation of Efficacy in Tracheobronchial Clearance Using Vibratory Sputum-ejection Apparatus in the Aged with Lower Respiratory Tract Infection是什么意思_Observation of Efficacy in Tracheobronchial Clearance Using Vibratory Sputum-ejection Apparatus in the Aged with Lower Respiratory Tract Infection在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句