He makes his own paint, grinding up the pigment with a little oil.他就着几滴油磨了些颜料，自己制油彩。Certain pigment colours were painted on to dry plaster using tempera (where egg yolk is used to fix the pigment).使用蛋彩画颜料（内含可以定色的蛋黄）在干石膏上...
在1874年费迪南德布劳恩是一名24岁的教师在德国莱比锡.In 1874 Ferdinand Braun was a 24 - year old teacher in Leipzig, Germany.冯.布劳恩 ( Wernhervon Braun,1912-1977 ) 是20世纪液体燃料火箭技术和宇航工程的开创者和奠基人.Wernher von Braun ( 1912 - 1977 ) was a romantic person...
Big ones entertain children and tiny ones tickle champagne aficionados.孩子们喜欢大泡泡,香槟控则迷恋小细泡.But it is the genres that fall in between that give among World Music aficionados.但是让世界音乐狂热爱好者们争战不休的,正是在这两种音乐之间的音乐类型.Clay develope...
Researchers realised that a tunable laser beam might be useful in surgery.研究人员意识到，可调谐激光束也许可以用在外科手术中。Alexandrite laser is one of the superior tunable solid - lasers.紫翠宝石激光器是迄今为止较好的固体可调谐激光器之一.The dielectric tunable behavio...