Dibromo neopentyl glycol was prepared from pentaerythritol and hydrobromic acid.由季戊醇、氢溴酸制备了二溴新戊二醇.In organic bromide turn thing production line, it is usually by - product large quantity hydrobromic acid.在有机溴化物的生产过程中, 往往...
He recorded a time of 4 minutes 23, bettering the old record of 4-24.他用时4分23秒，刷新了4分24秒的原纪录。He had dedicated his life to bettering the lot of the oppressed people of South Africa...他毕生致力于改变南非受压迫人民的命运。He recorded a time of...
The event was regarded as of such insignificance that not one major newspaper carried a report.该事件被认为根本无足轻重，以至于没有一家大报纸发文报道。The cost pales into insignificance when compared with the damage done to his reputation.与对他声誉造成的损...
巴斯侯爵the Marquess of Bath房顶未必能如侯爵设想的那么长久地遮挡住天空.That might not be so long as the Marquis supposed.“ 你倒是个哲学家, 你, ” 侯爵微笑说.'You are a philosopher, you there,'said the Marquis, smiling....
Experimental equipment management system with Spooling technology and sharing of virtual equipment.操作系统实验四设备管理用Spooling技术实现设备的虚拟与共享.Great loads of spooling, reduce the amounts of bobbins.大容量收线, 减少收线盘数量.The anchor chain w...