zzcnhic 发表于 2017-7-8 05:41:00

ASTM G194 − 08 (Reapproved 2013)

ASTM G194 − 08 (Reapproved 2013)
Standard Test Method for
Measuring Rolling Friction Characteristics of a Spherical
Shape on a Flat Horizontal Plane

admin 发表于 2017-7-9 14:19:37

谢谢您的分享,金币已奖励!
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