China's largest homemade slurry tunnel boring machine rolls off production line
Xinhua,September 30, 2018 Adjust font size:
China's largest slurry tunnel boring machine (TBM) rolls off the production line in Zhengzhou, capital of central China's Henan Province, Sept. 29, 2018. The machine has a diameter of 15.8 meters, making it the largest slurry TBM designed in China. (Xinhua/Feng Dapeng)
