sumingzhou 发表于 2017-3-1 22:51:51

ASTM A796/A796M-10

Standard Practice for Structural Design of Corrugated Steel Pipe, Pipe-Arches, and Arches for Storm and Sanitary Sewers and Other Buried Applications

admin 发表于 2017-3-2 16:05:27

谢谢您的分享,金币已奖励!
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