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- 2016/9/16
- China construction
Abstract The crack problem of concrete is a widespread existence but again difficult in solve of engineering actual pro...- 4183阅读
- 0评论
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- 2016/9/16
- China construction
Plain concrete is formed from a hardened mixture of cement ,water ,fine aggregate, coarse aggregate (crushed stone or gravel),air,...- 3714阅读
- 0评论
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