lishengfu1304 发表于 2018-5-28 17:13:18

Designation: C 403/C 403M – 05

本帖最后由 lishengfu1304 于 2018-5-28 17:37 编辑

Standard Test Method for
Time of Setting of Concrete Mixtures by Penetration
Resistance

admin 发表于 2018-5-29 15:59:44

谢谢您的分享，金币已奖励!
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