2013 发表于 2013-3-19 00:19:21

ISO 6506-3-2005 Metallic materials — Brinell hardness test — Part 3: Calibra

ISO 6506-3-2005 Metallic materials — Brinell hardness test — Part 3: Calibration of reference blocks


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21319817 发表于 2013-8-30 11:13:15

:lol

wanderer1997 发表于 2014-4-17 20:51:00

非常有用，感谢分享！
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