BSI BS EN 13146-7 2019.02.28 Railway applications - Track - Test methods for fas

匿名 发表于 2019-11-25 03:11:23 |阅读模式

BSI BS EN 13146-7 2019.02.28 Railway applications - Track - Test methods for fastening systems Part 7: Determination of clamping force and uplift stiffness

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