The slowness and quickness of the run-up in long-jump mainly depends on the utilization rate of speed.
跳远助跑的快慢较大程度取决于速度利用率的大小。
Since the eighties of the last century Chinese Long-Jumpers have achieved good performances, high utilization rate of approach speed is main effective way to these performances.
我国跳远运动员在自身平跑绝对速度与世界优秀运动员有较大差距的情况下取得了优异的成绩，采用很高的助跑速度利用率是其成功的主要原因；
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