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一种能够适应各种拱圈形状参数的拱架

Release Time:2021-01-06  Hits:

First Author: 黄才良

Disigner of the Invention: 张胜林,张哲,Huili Wang,尚晋,邱文亮,Tan Yonggang,潘盛山

Application Number: CN201110259323.9

Authorization Date: 2011-09-02

Authorization Number: CN102425121A

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