tunnel boring machine
名词 n.
英文释义
名词 n.
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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, they will run non-stop for three and a half years, stopping only for Christmas and Bank Holidays.
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数据来源: Wiktionary