Construction Techniques for Excavation and Support of Soft Swelling Wall Rock at the Threshold Zone of Tianxinshan Tunnel on Ganzhou-Longyan Railway是什么意思_Construction Techniques for Excavation and Support of Soft Swelling Wall Rock at the Threshold Zone of Tianxinshan Tunnel on Ganzhou-Longyan Railway在线翻译_英语_读音_用法_例句