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
外侧（接近小趾和小趾旁边脚趾那部分）踩点时，侧踩是最有效率。
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.
当鞋尖外侧（接近小趾和小趾旁边脚趾那部分）踩点时，侧踩是最有效率。
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
形后台
通道内
分离和再附着进行了数值模拟。
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人工审核，其表达内容亦不代表本软件
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