petroleum composition石油: petroleum; fossil oil; oil组成: form; make up; compose; form ...油组: line of oils航空汽油组成的掺合: blending of aviation gasoline components石油的组成: composition of petroleum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:石油组成,即可在微信中查询翻译