Numerical simulations of laminar flow separation and reattachment occurred in an annular backstep passage are performed by the SIMPLER algorithm.

用SIMPLER算法对流过环形后道内的层流分离再附着进行数值模拟。

The backstep is most effective when the outside edge of the front of the shoe is what contacts the hold — in the vicinity of the baby toe and the next toe in from the baby toe.

当鞋尖的外侧（接近旁边的脚那部分）踩点时，侧踩是最有效率的。