Efficacy and safety of noninvasive positive pressure ventilation in the patients with respiratory failure due to acute exacerbation of chronic obstructive pulmonary disease with conscious disturbances是什么意思_Efficacy and safety of noninvasive positive pressure ventilation in the patients with respiratory failure due to acute exacerbation of chronic obstructive pulmonary disease with conscious disturbances在线翻译_英语_读音_用法_例句