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...
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...
静电荷可以用撒布指示粉剂的方法,予以探测.Electric charge may be detected qualitatively by sprinkling or blowing indicating powders.可湿性粉剂的活性高于乳化制剂的活性.Wettable powders exhibited higher activity than emulsified formulations.包装: 20公斤防水浆料乳剂+0公斤防...
His suspicions were awakened.他起了疑心.At first grey light Otto and Norbert awakened to find that it was snowing heavily.黎明的曙光刚刚降临,奥托和诺贝特就醒来了,发觉漫天下着大雪.She awakened to the sound of birds singing.她醒来听到鸟的叫声。He was rudely awaken...