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:
municipal works
:
waterpower
:
highway
:
highway Project programme
>
ballast breadth
[英] the width of the road base
路基宽度
公路
路基宽度
为行车道路面及其两侧路肩宽度之和。当设有中间带、紧急停车带、爬坡车道、变速车道、错车道时,还包括这些部分的宽度。