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一种螺纹连接的圆钢管柱及施工方法

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Affilication of Author(s):土建与水利学院

Patent Applicant:liumei,wangpeijun

Type of Patent:发明

Application Number:201510808931.9

Number of Inventors:2

Service Invention or Not:no

Application Date:2015-11-19

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