📚 noun • entry_id 61409
tunnel boring machine
Meanings (ES + gloss)
tuneladora
A large machine used to excavate tunnels with a circular cross section.
Images of the first two Tunnel Boring Machines (TBMs) under construction for HS2 were released on May 26. Each TBM is 170 metres long and weighs around 2,000 tonnes. Once in use, t…
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