A multifunctional additive ARJ for drilling fluid was synthesized by emulsion polymerization.采用乳液聚合方法合成一种多功能钻井液添加剂ARJ, 该剂具有一剂多效的特点,使用方便.ARJ 21 is seen as the precursor to a jumbo jet.ARJ21型飞机被看作是大型喷气式飞机的前身.This probably ...
Inspector Banbury came up to see her, but she sent him away.班伯里巡官过来看她，却被她打发走了。In the nearby town of Banbury, however, the sheriff found his help.不过, 在附近的班百瑞镇, 郡长找到了愿帮助他的人.She took the crying boy to Banbury Cross.她将那正哭的小孩...