daqing pilot shows effectiveness of high-concentration polymer flooding
Related Translations:
大庆: 1.(大规模庆祝) grand celebration of an important event; great occasion 短语和例子廿年大庆 the festive occasion of the 20th anniversary2.[敬] (老人寿辰) birthday 短语和例子八十大庆 eightieth birthday3.(油田名) daqing (oi