Northrop Grumman, ọkan ninu awọn omiran ologun AMẸRIKA, ti ṣe idanwo ọkọ ayọkẹlẹ ina mọnamọna ti o lagbara julọ fun Ọgagun US, akọkọ 36.5-megawatt (49,000-hp) superconductor giga-iwọn otutu (HTS) ọkọ oju-omi eletiriki ọkọ oju omi, lẹẹmeji ni iyara bi Iwọn agbara ọgagun US ...
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