FiO2Wiktionary 原文英美词源链古法语Old French约 8–14 世纪fraccion↓ 借入中古英语Middle English约 1150–1500 年fraccioun↓ 继承英语EnglishFiO2词源说明Initialism of fraction [of] inspired + O2 (“oxygen”).释义名词noun1Initialism of fraction of inspired oxygen.同族词派生词 2PaO2/FiO2 ratio·SpO2/FiO2 ratio相关词 4molecular oxygen·oxygen·fraction·inspired