ygs67 发表于 2016-1-22 08:08:25

ASTM C1037-08

ASTM C1037-08 Standard Practice for Inspection of Underground Precast Concrete Utility Structures

nbjwbzj 发表于 2016-1-22 10:32:12

谢谢分享!!!!!!!

startupworks 发表于 2016-1-22 12:52:37

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admin 发表于 2016-1-22 17:01:10

谢谢您的分享,金币已奖励!
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