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1 × electronic-arc-welding 1 × preheating 1 × length-diameter-ratio 1 × acetylene-oxygen-ration 1 × coating 1 × straight-polarity 1 × explosive-welding 1 × oxygen-consumption 1 × manual-metal-arc-welding 1 × penetration 1 × flashing-refrigerant 1 × expansion-valve 1 × draft-tube-surge-shaft 1 × draft-fan 1 × reaction-turbine 1 × kaplan-turbines 1 × parts-of-boiler 1 × degree-of-reaction 1 × steam-turbine 1 × theoretical-power 1 × velocity-of-steam 1 × mass-flow-rate 1 × water-tube-boiler 1 × soot-blower 1 × heat-recovery 1 × scope 1 × aluminium-cube 1 × elements-of-nuclear-plant 1 × nuclear-power-plant 1 × boiler-type

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