通用柴油动力火车头将车厢转轨到了4号月台。The GM diesel engine shunted the coaches to Platform 4.19世纪船舶设计和船舶动力领域发生了重大的变革。The nineteenth century witnessed a revolution in ship design and propulsion.风能作为动力的成功是对可再生能源一次立见分晓的检验。The success of win...
为了尽量减少表面的反射损失,应该把这些滤色镜胶合在一起.The filters should be cemented together, thus minimizing the surface reflection losses.滤色镜的选择必须利用固有光谱.Filter selection is made using inherent spectra.还可使用滤色镜以达到同样效果.Lens filters are used for t...