An abbreviation for barrels of oil per day as a volumetric measure of crude oil produced by an oil well or field. The volume of a barrel is equivalent to 42 US gallons or 159 litres.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。