据了解，TBM掘进机现正以日均30米的速度快速掘进，创造大直径TBM在复杂地层掘进新速度。图为天山胜利隧道施工现场，天山号TBM。李太源 摄
[上一页] [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [下一页]
