oxygen-containing impurity含: keep in the mouth氧: oxygen杂质: impurity; foreign substance; ...含氧杂环: oxygen heterocycle; oxygen heterocyclic ring含氧化物杂质: oxide-containing impurity下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:含氧杂质，即可在微信中查询翻译
