由二苯并-1,3-二氧杂 - 环辛烷 -2- 羧酸经两步反应制得, 总收率70%. It was prepared by the reaction of 12 H - dibenzo [ d , g ] [ 1,3 ] dioxocin - 6 - carboxylic acid with acetoxime.
By measuring the motion of the galaxies in a cluster, astronomers can infer the cluster's mass.通过测量星系在一个星系团内的运动,天文学家们可以推定这个星系团的质量。They turned their telescopes towards other nearby galaxies...他们把望远镜转向附近其他星系。Space fli...
In nine years of living just outside Siena , Aaron Jastrow had never attended a Palio.埃伦·杰斯特罗在锡耶纳近郊住了九年, 却一次也没看过赛马.After having manufactured the rig, the power assembly's parameter of PALIO is acquired accurately. "...
Circumstances dictated that they played a defensive rather than attacking game.比赛形势决定了他们要打防守战而不是进攻战。Like their children, parents are often defensive about their private lives.就像子女一样，父母也常常很注重保护他们的私生活。He smiled, not wantin...
它非常适合做蛋糕和软布丁的馅儿。It makes a superb filling for cakes and sponges.她所需要做的就是把布丁加热。All that she would have to do was warm up the pudding.咖啡的味道中和了布丁的油腻感。The coffee flavour complemented the richness of the pudding....
These bands must introduce longitudinal asymmetry in the planetary albedo.这些云带必定引起行星反照率的经向不对称性.If the stellar spectrum is known, the albedo of the dust can be obtained.如果恒星的光谱已知, 就可得出尘埃的反照率.Cloudy areas can also be areas...