Bolt from the blue: Seen from the Hancock Tower, lighting strikes both the Willis Tower, right, and the Trump Tower in downtown Chicago as a severe storm rolls through the region last night.
突如其来:芝加哥市中心昨天遭遇一场暴风雨,从汉考克大厦看出去,闪电刚好同时击中威利斯大厦(右)和川普大厦。
Introduced here are the engineering requirements in the main cable, the tower frame and the storm-proof system.
介绍了主索和塔架、风缆系统的设施及工程方面的要求。
Introduced here are the engineering requirements in the main cable, the tower frame and the storm-proof system.
介绍了主索和塔架、风缆系统的设施及工程方面的要求。
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