加厚外壁设计的，增长整体性外观基础
Thickening the inner wall design, improve the overall body rigidity
三合一式什降座的提升负重深蹲挠度
Integral lifting seat to improve load bearing strength
线状组成刚度好的好，相同形，计算精度控制更长久
Mesh structure rigid, no deformation, precision to maintain more lasting
