Northrop Grumman, otu n'ime ndị dike ndị agha US, anwalela moto eletrik kachasị ike maka ndị agha mmiri US, ụgbọ mmiri eletrik mbụ nke 36.5-megawatt (49,000-hp) nke elu okpomọkụ superconductor (HTS), ugboro abụọ dị ka ngwa ngwa. Ike nke ndị agha mmiri US ...
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