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下面这句话里的drag chain是什么：Jack-up
DRAG CHAINS
Drag chains are to be furnished and installed by the Builder to provide for the
longitudinal movement of the cantilever beam and transverse movement of the drill floor.
The drag chains are to be sized to accommodate all power, control, instrumentation,
communication, etc. services required between the hull, cantilever and drill floor. A
spare capacity of 15% is to be provided in both drag chains. |
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发表于 2009-5-7 16:03
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