With adding standards to the mineral matrix, the recovery of n-alkane, fatty acid, cholesterol is 94.8%, 90.8% and 98.8% respectively.是什么意思_With adding standards to the mineral matrix, the recovery of n-alkane, fatty acid, cholesterol is 94.8%, 90.8% and 98.8% respectively.在线翻译_英语_读音_用法_例句