To study the relationship between vital capacity and helium-oxygen mixture inspiration and altitude environment to explore changes of vital capacity and expiratory reserve volume (ERV).是什么意思_To study the relationship between vital capacity and helium-oxygen mixture inspiration and altitude environment to explore changes of vital capacity and expiratory reserve volume (ERV).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句