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混凝土纳米减水超早强剂

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First Author:jiajinqing

Disigner of the Invention:孟刚,刘春梅,王海涛

Authorization Date:2011-11-18

Authorization number:CN201110366521

Pre One:一种用于支护基坑侧壁的无根护壁桩及其施工方法