Northrop Grumman, ib tug ntawm cov tub rog loj hauv Teb Chaws Asmeskas, tau ua tiav kev sim lub cev muaj zog tshaj plaws rau US Navy, lub ntiaj teb thawj 36.5-megawatt (49,000-hp) high-temperature superconductor (HTS) nkoj propulsion electric motor, ob zaug sai li sai tau. US Navy lub hwj chim rati ...
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