The Fuxingdonglu roadway tunnel is a twin bore, bi-directional, double deck, six lane tunnel crossing the Huangpu River, with outer diameter of 11.00 m, inner diameter of 10.04 m, and headroom of 2.6 m at the upper deck and 4 m for the lower deck.是什么意思_The Fuxingdonglu roadway tunnel is a twin bore, bi-directional, double deck, six lane tunnel crossing the Huangpu River, with outer diameter of 11.00 m, inner diameter of 10.04 m, and headroom of 2.6 m at the upper deck and 4 m for the lower deck.在线翻译_英语_读音_用法_例句