采取化堵、卡堵水等措施,解决井层间层内非均质性.To solve the aeolotropy between wells and formations through melt - shield and block - shield way.东辛油田以层状断块油藏为主,含油层系多, 物性差异大,高含水期层间层内油水分布复杂.Dongxin field belongs to stratified block reservoir, and...
Stem cells a lesson from dedifferentiation.干细胞:从脱教训.The rest of phloem also produced callus through dedifferentiation. In addition, there was callus from xylem.残存的韧皮部也可以脱分化形成愈伤组织, 此外, 还存在愈伤组织源于木质部的情况....
He would stay for hours at a stretch in the laboratory.他在实验室里一蹲就是好几个小时.Can you work ( for ) six hours at a stretch?你能连续工作六小时 吗 ?Today I really swam to my heart's content . I did 3,000 metres at a stretch.今天我一口气游了三千米...