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在从事小型半圆式田径场地的画线工作时,首先要选择四条直、曲段分界线作为基准线;其次计算和换算好所需数据;然后沿着分道线来推寻弯道上起跑线的位置。
When working on the drawing of a small semicircular track and field venue, first select the four straight and curved sections as the baseline, then calculate and convert the required data, and then follow the laneway to find the starting line on the curve .