AIM:To compare the effect of helium-oxygen mixtures containing 80%helium or 60%helium on vital capacity(VC) and related index.是什么意思_AIM:To compare the effect of helium-oxygen mixtures containing 80%helium or 60%helium on vital capacity(VC) and related index.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句