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一种严寒地区碾压混凝土坝间歇层防水平漏水结构

Release Time:2021-03-23  Hits:

First Author: 王一帆

Disigner of the Invention: Fei Kang

Application Number: 202020949433.2

Authorization Date: 2020-05-29

Authorization Number: ZL 202020949433.2

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