问题9：地铁列车能从停靠的站台迅速出发，但为何大多数地面列车的加速能力却远不如地铁呢？解答1：在修建伦敦地铁的时候，站台的铁轨修得比站与站之间的铁轨略高一些。这样，当地铁列车离开站台时正好是下坡，加速当然容易。相应地，列车进站前由于需要爬一段坡，故列车会逐 Question 9: Subway trains can quickly depart from docked platforms, but why most ground trains have far less acceleration than the MTR? Answer 1: When building the London Underground, the railroad tracks of the station are slightly higher than those between stations and stations. In this way, when the subway train just left the platform downhill, of course, easy to accelerate. Correspondingly, before the train enters the station, it needs to climb a slope, so the train will go by