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一种混凝土箱梁腹板和底板的U形预应力结构

Release Time:2019-03-09  Hits:

First Author: 李文武

Disigner of the Invention: 王骞,张哲,莫山峰

Application Number: CN201620214621.4

Authorization Date: 2016-03-18

Authorization Number: CN205557288U

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