English to Polish Tech/Engineering Transport / Transportation / Shipping trams

Podaje fragment zdania opisujacego tramwaj: "...low floor tramways, whose floor in the passengers compartment is entirely at a height of 350mm from top of rail without any steps or slopes, except for the areas next to the 1300mm-wide doors, where it is at a height of 320mm from top of rail, being these 320mm-areas connected to the 350mm-areas through a transversal slope"