polyatomic gas多: many; much; more原子: atom气体: gas; gaseous fluid单原子气体: monatomic gas; monoatomic gas二原子气体: diatomic gas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:多原子气体,即可在微信中查询翻译