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带有防护外壳的阿基米德桥 专利
发明专利. 带有防护外壳的阿基米德桥, 专利号: ZL03155848.8, 申请日期: 2003-08-25, 授权日期: 2012-12-28
Inventors:  洪友士;  李岐;  姜俊成;  董满生
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