1、分道行驶公路
...分道线 lane line分道行驶公路 dual highway分道通风 divided ventilation ...
2、双车道公路
双车道公路 double lane highway; double-lane highway; dual highway; two-lane highway双车道交通 two lane traffic; two-lane traffic .
dual type highway双层公路
dual redundant highway双余度火控总线
dual-dual highway双复式公路
two-way dual-lane highway双向双车道公路
Highway dual type双层式公路
dual-lane two-way highway双向双车道公路