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Method of using fixing device for pulling metal rod used in civil engineering field, involves attaching a wedge block to an end of a sub-block by hammering process for fastening the metal rod with the wedge block. 专利
申请日期: 2016-01-01, 公开日期: 2016-02-24
作者:  DONG H GUO B HAN Y LI J WANG B CHAN
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