Crude oil samples of the Xifeng oilfield in the Ordos basin were collected systematically and analyzed by means of high-resolution GC-MS and IRMS.是什么意思_Crude oil samples of the Xifeng oilfield in the Ordos basin were collected systematically and analyzed by means of high-resolution GC-MS and IRMS.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句