Technology
World's Largest HSR Shield Machine Crosses Yangtze River
China's world's largest high-speed rail shield machine 'Linghang' crosses the Yangtze River, completing the underwater section of the Chongtai Tunnel.
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China's world's largest high-speed rail shield machine 'Linghang' crosses the Yangtze River, completing the underwater section of the Chongtai Tunnel.