ean13码:N13N12N11N10N9N8N7N6N5N4N3N2N1C1=(N2+N4+N6+N8+N10+N12)*3C2=N3+N5+N7+N9+N11+N13C3=C1+C2C4=C3的个位数N1=10-C4(若C4=0则N1=0)..
ean13码:N13N12N11N10N9N8N7N6N5N4N3N2N1C1=(N2+N4+N6+N8+N10+N12)*3C2=N3+N5+N7+N9+N11+N13C3=C1+C2C4=C3的个位数N1=10-C4(若C4=0则N1=0)..
上一篇:走纸不连续