The diisobutyl dicarboxylate was prepared by using acid and isobutanol as material and acid as catalyst.以二羧酸和异丁醇为原料,用硫酸作催化剂,合成二羧酸二异丁酯.Butyl cinnamate was synthesized from cinnamic acid and butyl alcohol using tungstosili...
Acid rain is not straightforwardly attributable to the burning of coal.酸雨并非简单地由烧煤造成。Nor is acid rain always, and universally, a bad thing.酸雨也并非在任何情况下都是坏事。This comedy of contemporary manners is told with compassion and ac...
Blake jumped in expertly; the boat dipped slightly under his weight.布莱克很熟练地跳上了船，他的重量使小船微微向下沉了沉。This picture shows the view from a car using normal dipped lights.这幅图片显示的是从一辆使用正常近光灯的汽车上所看到的景色。The left wing dipped until it ...
这个森林黑暗寂静，经常有幽灵和看不见的鬼怪出没。The forest was dark and silent, haunted by shadows and unseen presences.死去的孩子们的幽灵常在该村出没。The village is haunted by the ghosts of the dead children.山谷里有无数野猪出没。Wild boar are numerous in the valleys....
The calming effect seemed to last for about ten minutes.镇静效果好像持续了大约10分钟。The presence of his immediate family is obviously having a calming effect on him.他的直系亲属都在场，这显然起到了让他镇定的作用。Don't pull the boy about ; he wants ca...
色泽是反射和衍射的综合效果.Lustre is the integral effect of reflection and diffraction.由热磁 、 电阻率 、 差热分析和 X 射线衍射的测量结果分析了样品的晶化转变.As the experimental results ofthe thermomagnetization, resistivity, DSC and X - ray diffraction, the cryst...