The tunnel boring machine (TBM) Dinghai, with a maximum excavation diameter of 14.57 meters, was officially unveiled in Changsha, central China\’s Hunan Province on Wednesday.
Enjoy life, Inspiring work
Enjoy life, Inspiring work
The tunnel boring machine (TBM) Dinghai, with a maximum excavation diameter of 14.57 meters, was officially unveiled in Changsha, central China\’s Hunan Province on Wednesday.