Objective To investigate the cause,development mechanism and utility treatment of thoracic cavity hemorrhoea after the closed drainage for spontaneous pneumothorax.
目的了解自发性气胸闭式
后胸腔大出血的原因、发生机制及有效治疗方法。
Objective To investigate the cause,development mechanism and utility treatment of thoracic cavity hemorrhoea after the closed drainage for spontaneous pneumothorax.
目的了解自发性气胸闭式后胸腔大出血的原因、发生机制及有效治疗方法。
明：以上例句、词性
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