ygs67 发表于 2016-1-19 09:28:10

ASTM G171-03(2009)e2

ASTM G171-03(2009)e2 Standard Test Method for Scratch Hardness of Materials Using a Diamond Stylus

admin 发表于 2016-1-19 16:32:56

谢谢您的分享,金币已奖励!
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