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一种自升式钻井平台伸缩鳍桩靴

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First Author:张振华

Disigner of the Invention:Lucy,Ma Kun,Yan Lin,chenming,丁伟,yuyanyun,jizhuoshang,zhangmingxia,jinchaoguang,王宗召

Authorization Date:2008-02-01

Authorization number:ZL 2008 20219563.X

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