Becasue the hardness of the material of YK05 is very high if produced as 16 degrees, the product will rupture. The factory confirmed that the least angle that can be achieved is 18 degrees if produced according to ZIGONG drawing. Please refer to the attachement.不大明白"倒脚"是什么意思,翻译的时候就避开了大意没问题, 细节你可以自己修改一下希望能帮到你...
