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据称巴加恩引水隧道是世界上最长的隧道,该隧道在岩石中,连续开挖。这条隧道已经竣工。芬兰首都赫尔辛基将通过这条引水隧道把120公里以外的湖水引进首都。水流靠重力自流。
The Bajarn diversion tunnel is said to be the longest tunnel in the world and is continuously excavated in rock. This tunnel has been completed. Helsinki, Finland’s capital, will introduce 120 kilometers of lake water into the capital through this diversion tunnel. Water flow by gravity.