215 ：0.6化成最简整数比是3N/B9L-}5s9g)`2G(c'm0a'Y,G;U，比值是-?5y1D-U,i5?*s.o'a*}.X6v7u4Y*u。8m/D1x4N8R0_/N6d(N,|+p+v