Objective : To investigate the effects of preoxygenation on hepatic antioxidant capacity in rats.
目的: 探讨不同浓度预吸氧对肝脏抗氧化损伤能力的影响.
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Preoxygenation replaces the primarily nitrogenous air , which constitutes the patient's functional residual capacity, with oxygen.
这样可以用氧气取代之前被氮气占据的肺泡.
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