postural drainage
中文POS-tu-ral 
 
        
        释义:Use of body position to drain secretions from the lungs by gravity; the patient is placed so that secretions will move passively into the larger airways for elimination
postural drainage
中文释义:Use of body position to drain secretions from the lungs by gravity; the patient is placed so that secretions will move passively into the larger airways for elimination