zzcnhic 发表于 2017-7-8 00:35:57

ASTM G181 − 11

ASTM G181 − 11
Standard Test Method for
Conducting Friction Tests of Piston Ring and Cylinder Liner
Materials Under Lubricated Conditions

admin 发表于 2017-7-9 14:17:33

谢谢您的分享,金币已奖励!
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