YouTube28 Oct 2022
9m

4天建1层楼!“空中造楼机”是怎么造出摩天大楼的?《大国重器Ⅱ》第3集【CCTV纪录】

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4天建1层楼!“空中造楼机”是怎么造出摩天大楼的?《大国重器Ⅱ》第3集【CCTV纪录】