60227 IEC 53(RVV)扁 2×0.75~1.0 60227 IEC 53(RVV) 2×0.75~1.0 60245 IEC 53(YZ) 2×0.75~1.0 60245 IEC 57(YZW) 2×0.75~1.0 60245 IEC 66(YCW) 2×1.0