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sanmaosjy 发表于 2017-11-28 10:54:33

JIS B 7726-2010 Rockwell hardness test — Verification and calibration of test

JIS B 7726-2010 Rockwell hardness test — Verification and calibration of testing machines

admin 发表于 2017-11-28 12:47:58

谢谢您的分享，金币已奖励!

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