petroleum cracking process石油: petroleum; fossil oil; oil裂化: cracking过程: process; procedure; transver ...渣油裂化过程: residuum process石油裂化: cracking of oil; cracking of petroleum; petroleum cracking process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:石油裂化过程，即可在微信中查询翻译
