...的电子邮件中说: In fact, both Amtrak and the freight railroads have been going full speed in implementing PTC, but there are some formidable challenges. For the freight railroads, when PTC technology was mandated by Congress, the technology to implement it did not exist. So, ra...
...想被称为铁路还是铁路。 铁路之间(between railway)和铁路(railroad)的区别 铁路与铁路的主要区别如下: 这两个词都表示车辆行驶的轨道。主要是火车。 区别基本上在于用法。在美国,铁路比铁路更常用。 在旧时代,有轨电车在...
...try's able-bodied men on the battlefield, workers for the Transcontinental Railroad were initially in short supply. In California, white workers were more interested in seeking their fortunes in gold than in doing the back-breaking labor required to build a railroad. The Central Pacific Railroad tur...
所有铁路系统的设计、结构和运行是铁路工程的主要目的。土木工程、计算机工程、...
横贯大陆的铁路是横跨整个大陆的铁路系统,以海洋或其他大陆边界为终点。这些铁...
铁路道岔是铁路用来让火车改变轨道的装置。当列车预定在一组轨道上行驶时,该轨...
国家地下铁路自由中心是俄亥俄州辛辛那提市的一个博物馆,致力于保存美国奴隶制...
建筑信息建模(BIM)是一个以电子方式设计和试验建筑特征及其在施工开始前的功能...
建造铁路系杆挡土墙最重要的提示可能是在处理铁路系杆时要小心。这些木块被涂上...