It has rounded shoulders inside instead of the sharp orifice - like edge.
2
对于有限尺寸板内开孔的情形,文中用有限单元法来分析腰圆形孔口的应力分布和应力集中。
For the plates with finite dimensions, the finite element method is used to obtain the stress distribution and stress concentration around the ovaloid opening.
3
在内部作成圆形凸肩以代替锐缘孔板状的侧面。
It has rounded shoulders inside instead of the sharp orifice-like edge.