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Continuous hoisting operation device and method for vertical section of S-shaped tunnel
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Shipping rudder system installation method
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Adjustable ramp support device and method
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A kind of ship compartment cleaning door pneumatic driving bleaching device
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A kind of floating bollard guide groove assembly device and assembling method
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A kind of steel structural plant roof structure
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High water head stairstepping tunnel all steel lining cutting penstock installation method
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A kind of workshop automatic lifting gate
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The method of construction of large-scale floating ship service machine
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Swing arc based on double tops instrument tracks welding system
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A kind of novel steel cofferdam structure and installation method
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The dropproof locking device of grasping beam and locking means
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A kind of device and method by the prefabricated tile pressure head of veneer reeling machine
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A kind of method that ship superstructure is built
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A kind of fully automatic molten electrode gas shield down hill welding suitable for diversion penstock connects method
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A kind of mold and method suitable for the compacting of power station abnormal shape penstock tile
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