金属资源列表
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[国外标准] BS EN 10270-1-2001 金属弹簧用钢线.获得专利的冷拉伸非合金弹簧钢线Steel wire for mechanical springs - Patented cold drawn un
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[国外标准] BS 7371-6-1998 金属紧固件涂层.热浸镀锌涂层的规范, Coatings on metal fasteners - Specification for hot dipped galvani
[国外标准] BS EN 10270-1-2001 金属弹簧用钢线.获得专利的冷拉伸非合金弹簧钢线Steel wire for mechanical springs - Patented cold drawn un
[国外标准] BS 7371-6-1998 金属紧固件涂层.热浸镀锌涂层的规范, Coatings on metal fasteners - Specification for hot dipped galvani