The kinetics and mechanism of exciplex formation of 9,10 - dicyanoanthracene ( DCA ) by acenaphthenone ( ANO ) have been studied. 研究了苊酮 ( ANO ) 对9,10-二氰蒽 ( DCA ) 的荧光猝灭与激基络合物形成的动力学与机理.
早期研究已证实鞣花酸具有防紫外线作用.Earlier studies have suggested it has a photo protective effect.浆果富含鞣花酸, 研究表明它可以抗癌.And berries contain ellagic acid, which some studies show may fight cancer.研究了用紫外分光光度法测定鞣花酸含量的一种新方法.A new method for d...
A massive rock fall trapped the men as they operated a tunnelling machine.这些工人在操作隧道挖掘机时被大量的落石困住了。The workers were tunnelling through solid rock.工人们正在坚石中挖掘一条通道.The prisoners had escaped by tunnelling.犯人挖地道逃跑了....