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关注：1
2013-05-23 12:21
求翻译：calcium leaching of concrete results in the increase of the porosity and further brings about the degradation of stiffness and the strength of concrete是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
calcium leaching of concrete results in the increase of the porosity and further brings about the degradation of stiffness and the strength of concrete
问题补充： |
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