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石油钻井平台钻塔移动装置

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First Author:jizhuoshang

Disigner of the Invention:Yan Lin,chenming,zhangmingxia,yuyanyun,郑玄亮,wangyunlong,liuyang

Application Number:CN200520090745.8

Authorization Date:2005-05-11

Authorization number:CN2793294

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