在田径训练中,钉鞋是一种增加摩擦力、提高运动成绩的主要用具,但往往鞋底、鞋面还好而鞋底上的钉子就短而钝了(有许多钉鞋就这样被闲置了,真是可惜)。在换钉子过程中,一方面由于钉子已经磨损到很短的程度,起子很难套上去,另一方面由于使用时间太长,钉子已氧化、生锈,就是套上了也取不下。我们通过实践总结出,如钉子磨损到起子套不上或取不下时,可用锉刀在钉子两边对 In track and field training, spikes are a major tool to increase friction and improve athletic performance. However, often the soles and vamps are good and the nails on the soles are short and dull (it is a pity that many spikes are left unused) ). In the process of changing nails, on the one hand because the nails have been worn to a very short extent, the screwdriver is hard to cover. On the other hand, because the nails are oxidized and rusty, the nails can not be put on. We conclude through practice, such as the nail worn to the screwdriver can not afford or take no less, the file can be used on both sides of the nail pair