兑水 发表于 2009-9-23 19:31:10

ASTM C 1504M-2004暴风雨排水管用增强预制混凝土三边结构的制...

C1504M-03 Standard Specification for Manufacture of Precast Reinforced Concrete Three-Sided Structures for Culverts, Storm Drains (Metric)
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