N → another name for plimsoll
The graph 1 is mainly for each kind of shoes with no round shoe lace holes, such as leather shoes, gym shoes, liberation shoes, rubber shoes and the like;
图1主要适用于鞋面无圆形鞋带孔的各类皮鞋、运动鞋、解放鞋、胶鞋等。
Design of scientist of England of bedspring football shoe gives a kind of sufficient gym shoes of bedspring , this kind of shoe can reduce sufficient ministry to wear away articulatorily flimsily.
弹簧足球鞋英国科学家设计出一种装有弹簧的足球鞋，这种鞋可减少足部脆弱关节的磨损。
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