Objectives: to explore the relation between the lung function and the phrenic motor nerve conduction (PNC) in patients with chronic obstructive pulmonary disease (COPD).
目的：初步研究慢性阻塞性肺病患者(COPD)肺功能及膈神经传导(pnc)，并探讨二者之间的关系。
Objectives: to explore the relation between the lung function and the phrenic motor nerve conduction (PNC) in patients with chronic obstructive pulmonary disease (COPD).
目的：初步研究慢性阻塞性肺病患者(COPD)肺功能及膈神经传导(pnc)，并探讨二者之间的关系。
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