pengyuewang 发表于 2017-2-17 08:45:18

ASTM C-42 Standard Test Method for Obtaining and Testing Drilled Cores and Sawed





ASTM C-42 Standard Test Method for Obtaining and Testing Drilled Cores and Sawed Beams of Concrete











admin 发表于 2017-2-18 08:38:35

谢谢您的分享,金币已奖励!

tellmerose 发表于 2017-4-12 09:32:24

thank you for your doc!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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