报道以呋喃甲醛和苯乙酮为原料,氢氧化钠为催化剂,采用超声波辐射合成糠叉乙酰苯的方法.With furfural and acetophenone as raw materials - furfurylideneacetophenone was synthesized by NaOH as catalyst under ultrasonic irradiation....
We've been uncovering ruins at the famous ancient city of Pompeii for several years.我们这几年一直在试着揭开著名古城庞培的废墟之谜.Discovery is the process of uncovering each party's documents to the other before a hearing starts.证据开...
Heat evaporates water into steam.水受热变成水蒸气.Moisture is drawn to the surface of the fabric so that it evaporates.湿气被吸到织物表面从而蒸发。As the water evaporates, a crust of salt is left on the surface of the soil.随着水分的蒸发，地面上留下了一层结晶盐...
By gravitation the sun and planets act and react upon one another.太阳与行星通过引力发挥作用并相互影响。He also propounded the Heliocentric theory of gravitation, thus predating Copernicus by almost one thousand years.他也提出以引力作用为基础的日心说, 比哥白...
I was able to get on with my work without interruption.我可以不受打扰继续我的工作了。What are your neighbours like? Do you get on with them?你的邻居怎么样？跟他们相处得好吗？Get on with life and don't sit back and mope.活跃一些享受生活，不要闲呆着闷闷不乐的。...
小矮人突然出现了.The little man appeared out of thin air.其实有一些紫罗兰也觉得小矮人的丑陋大半是他自己故意做出来的.Some of the Violets themselves felt that the ugliness of the little Dwarf was almost ostentatious.每个种族都会争取它的拥有权: 人类, 矮人, 巫师.Everyone will try...