China makes its biggest tunnel boring machine for India
The machine weighs 2,500 tonnes, and its maximum driving power is 4,200 kilowatts.
Apr 18, 2016, 22:01 PM IST
The machine weighs 2,500 tonnes, and its maximum driving power is 4,200 kilowatts.
Apr 18, 2016, 22:01 PM IST