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英国的邮政地铁何延军英国皇家邮政地铁，是当令繁华大城市邮件运输速度最快的运邮工具，英国邮政地铁设计于１９０９年，隧道建筑始于１９１４年，由于战争，１９１７年中断建设，直至１９２３年才又重新开始修建，１９２７年１２月５日地铁正式投入运行。该地铁线路全长...
Britain’s postal subway He Yanjun The Royal Mail Post is the fastest shipping tool for transporting the most bustling metropolitan mail. The British Post Subway was designed in 1909 and the tunnel construction started in 1914. As a result of the war, construction was interrupted in 1917 until The construction was resumed in 1923, and the subway was officially put into operation on December 5, 1927. The subway line full length ...