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khong dang ke, dien tich moi vong 60 c m l Stato tao ra t u tr'jong
deu coA. 0,3276 A.Viflyji du 17: (DH-2010) Noi hai cue ciia mot may phat dien xoay chieu mot phavao hai dau doan mach AB gom dien tro thuan R mac noi tiep voi cuon camthuan. Bo qua dien tro cac cuon day cua may pha[r]