结果显示，陈敏的助跑节奏良好，速度较快，但踏跳前一步明显减速，主要是由于摆动腿着地脚跟领先所致；
The results show that Chen Min' s run-up cadence is good with fast speed, but the last step before the take-off is obviously slow, which is because the landing heel of the swinging leg is ahead.
以慢慢数到五的速度先把脚尖踮起来，但在最高点可以稍停一下，然后再慢数到五的速度将脚跟缓缓放下，直到最低点。
Rise tiptoe stand on tiptoe first with counting the speed of 5 slowly, but can stop a bit in apogee, count the speed of 5 again slow next calcaneal slowly put down, till the nadir.
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