The rate constants of radical and electrophilic addition to alkenes are dominated by different factors.烯烃的自由基加成和亲电加成速率受不同的因素控制.These should be four undetermined constants in the displacement function.位移函数中应有四个未定常数.Some w...
Two significant constants have been found in a number of research studies.若干研究已经发现了两个重要常量。These should be four undetermined constants in the displacement function.位移函数中应有四个未定常数.Another limitation is the lack of availabil...
Sincere felicitation on your completing the postgraduate course and receiving the doctorate of science.衷心祝贺你修完研究生课程并获得理学博士学位.He’s completed his doctorate on Victorian sexuality.他完成了有关维多利亚时代性行为的博士论文。She's studying fo...
Astronomers usually assume that interstellar dust is closely confined to the galactic plane.天文学家通常认为,恒星际星尘都是紧靠着银河平面的.Early astronomers thought that our planet was the centre of the universe.早期的天文学家认为我们的星球是宇宙的中心。Astronome...
Why did the fatuous King send him into exile?昏庸的楚王为什么把屈原流放了?What a fatuous remark!多么愚蠢的话 呀 !fatuous jokes愚蠢的笑话The Chief was left speechless by this fatuous remark.这句傻话让主任一时说不出话来。...
Due to a security alert, this train will not be stopping at Oxford Circus.由于安全戒备的原因，该次列车在“牛津街口广场”站将不停留。Matcham steady and alert, at a sign from Dick, ran along the thwarts and leaped ashore.麦青机警 、 镇静地照着狄克向他做的手势,急急地沿着船上的座...