The numerical results show that the errors in radius and across-track are less than 0.1 m, and that in along-track less than 1 m.
数值结果表明：用本方法测轨，向径、垂迹方向误差小于0.1米，沿迹方向误差小于1米。
Or in the foam concrete cover with a 0.05 m thick porous asphalt layer and plastic layer, then can make the track and field with the runway.
或者在泡沫混凝土上盖上一层0.05m厚的多孔沥青层及塑料层，则可作田径跑道用。
A typical outdoor track is a400 m oval.
通常的室内田径场是一个400米长的椭圆。
A typical outdoor track is a400 m oval.
通常的室内田径场是一个400米长的椭圆。
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