The source of electrons in an electron microscope is a heated filament.电子显微镜中的电子源,是一加热的灯丝.Characterzation: high quality quartz bulb, biplanar filament which enables increased illumination, uniform color temperature and l...
30米防水, 进口机芯, 表面超大超强夜光显示,日期显示.VA 1027 LPP: water resistant 30 meters, japan movement, markings, day display.光显示 的是阴性,他至少缺席三场比赛.X - rays were negative and he will miss at least three games.胸部 X 光显示心脏扩大及两侧肋膜积水.Chest X - ray...
Oxford's social circle was far too liberal for her taste.牛津的社交圈过于开放,不合她的胃口.I left Oxford in 1961 hungry to be a critic.我于1961年离开牛津，渴望成为一名评论家。The Oxford Chemistry Primers aim to cover important topics in organic chem...