In this paper a new method on the dimethyl malonate has been proposed.本文通过对丙二酸二甲酯合成新方法的研究,收率达到80%以上.Aside from removing the malonate, how can this inhibition of respiration be overcome? Explain.除了去掉丙二酸之外, 还可以怎样克服这种对呼吸作用的...
Squirrels are arboreal creatures.松鼠是栖于树上的动物.Red squirrels are now very rare in Britain.红色松鼠在英国已十分罕见了.They stretch out their legs like flying squirrels.它们伸展四肢,就像飞行中的松鼠一样....
无穷级数的收敛性与发散性与此概念有关.Convergence and divergence of infinite series depend upon this concept.通过威阿斯塔斯周围的学生,人们知道了一致收敛性的重要性.Through Weierstrass circle of students the importance of uniform convergence was made known.这种原理的收敛性结果...
Nixon pointed his finger at the startled Fulbright and said, " OK, Bill, agreed? "尼克松用手指着目瞪口呆的富布赖特说: “ 怎么样, 比尔, 同意了 吧 ? ”He liked Fulbright, the play of his civilized mind and, bite of his language.他喜欢富布赖特思想开朗, 谈吐锋利.Legi...
Europe gave them away, which allowed polluters to make windfall profits.欧洲无偿发放配额, 结果却让排污企业赚得盆满钵满.Three hours later we are back in the kitchen hulling a heaping buggyload of windfall pecans.三小时后我们回到了厨房，开始给那满满一车风吹自落的山核桃去核。...