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URL title: H型钢-天津市欧洲杯赛程2021赛程&#
URL description: H型钢是一种截面面积分配更加优化、强重比更加合理的经济断面高效型材，因其断面与英文字母“H”相同而得名。由于H型钢的各个部位均以直&#3
URL keywords: H型钢
URL last crawled: 2022-05-13

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