1) twin tunnel with eight travelled lanes
双洞八车道
1.
The caving width of highway twin tunnel with eight travelled lanes is over 23 meters and its oblateness is small than 0.
双洞八车道公路隧道最大跨度在23 m左右,扁平率小于0。
2) Twin bore eight lane
双洞8车道
4) two-track tunnels
双洞隧道
1.
Aseismic and seism-reducing modeling study for entrance of two-track tunnels
双洞隧道洞口段抗减震模型试验研究
6) single-hole with four lanes
单洞四车道
补充资料：八洞神仙
1.道家谓神仙所居之洞天分上八洞﹑中八洞﹐下八洞。上八洞为天仙﹐中八洞为神仙﹐下八洞为地仙﹐总谓之"八洞神仙"。民间则专以汉钟离﹑张果老﹑铁拐李﹑韩湘子﹑曹国舅﹑吕洞宾﹑蓝采和﹑何仙姑等八仙为"八洞神仙"。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条