The fuberidazole was prepared by reaction of O - phenylenediamine with furfural at the presence of CTMABas catalyst. 以邻苯二胺和糠醛为原料,以十六甲基三烷基溴化铵(CTMAB)为催化剂合成了麦穗宁.
这是欧洲人最早的定居地之一。This was one of the first areas to be settled by Europeans.莱斯特—斯旺宁顿铁路被看作是英国最早的铁路之一。The Leicester Swannington Railway is numbered among Britain's railway pioneers.最早的雕塑作品受到了希腊艺术的影响。The very earliest scu...
跑道的路面可用颜色表示.The runaway surfaces can be indicated by colour.他们能把驾驶员 “ 引导 ” 到他真能看到跑道的高度.They can " talk down " the pilot to the point where he can actually see the runway.草地跑道位于水泥跑道的东侧.Grass runway on the east side of the...