四、直道技术身体姿势为了滑得快,运动员或者尽力减少阻力,或者增加推进力,或者同时采用以上两种方法。从力学的原理看,运动员只有掌握了正确的技术才能达到上述要求。提高成绩的一个最重要原因,就是通过不断改善比赛条件、器材和降低冰中矿物质,从而减少了阻力。这样,空气阻力和冰刀与冰面的摩擦力都减少了。 In four, straightening technology body posture In order to slide faster, the athlete either try to reduce the resistance, or increase the propulsion, or both at the same time. From the mechanistic principle, athletes only have the correct technology to meet the above requirements. One of the most important reasons for improving performance is to reduce drag by continuously improving the conditions of competition, equipment and minerals in the ice. In this way, air resistance and skate friction with ice are reduced.