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                                  1. 北京第一高楼——中国尊

                                    时间:2018-03-08 14:52 作者:admin 分享到:

                                    536米高的北京第一高楼——中国尊承重部位的钢梁,应用1400吨河钢舞钢特厚高强度、高层建筑系列用钢板
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