单词	history files
释义	History Files歷史檔案電機工程
随便看	petroleum derivative petroleum-derived hydrocarbon petroleum desalting of petroleum dike petroleum distillate petroleum drilling petroleum emulsion petroleum engine petroleum engineer petroleum engineering petroleum ether petroleum ether--benzine petroleum ether-- light petroleum petroleum ether--light petroleum petroleum ether; light petroleum petroleum ether， light petroleum petroleum exploration petroleum exploration survey petroleum fly petroleum fraction petroleum fuel oil petroleum furnace petroleum gas petroleum gasoline content of petroleum geologist