参加径赛的运动员,跑第几跑道是由抽签公平定出的。中短跑项目,凡距离在100米以上,都要跑过一段弯道,有时还不止一次。因为内外圈跑道的曲线长度不同,所以各道的起跑点也不同,这样每道的路程就一致了。但这样就真的公平了吗?在跑弯道时,会形成曲线运动所不可缺少的向心力,这力有使运动员倾倒的趋势,为克服这一点,就必须使劲,这就是所谓“跑弯道技术”。运动员必须 Athletes participating in the track race, run the first few runways set by the lottery fair. Sprint project, where the distance is above 100 meters, have to run through a corner, and sometimes more than once. Because the curve length of the inner and outer raceway is different, so the starting point of each lane is also different, so the distance of each lane is the same. However, this is really fair? In the corner, it will form the necessary centripetal force of the curvilinear movement. This force has the tendency to dump the athlete. To overcome this point, we must exert great force. This is the so-called “cornering technology”. Athletes must