Non-linear equations are(constructed) with the restriction of the satellite ground trace to resolve the unknown semi-axis and inclination, but it's too complicated to be resolved directly.
以轨道半径和轨道倾角为未知量依据星下点轨迹要求条件构建了非线性方程组，但直接求解过于复杂，采取迭代的方法解决。
Application of ground penetrating radar in projects indicates that its application in old cement concrete pavement retrofitting is feasible and it may overcome restriction by common inspection method.
工程应用表明，探地雷达应用到旧水泥混凝土路面改造中是可行的，可以克服常规检测方法的局限性。
It is therefore easy to conclude that the swelling soil ground is a semi-infinite space and it is feasible to adopt the lateral restriction test of in situ swelling soil.
结论膨胀土路基为半无限体空间体，采取有侧限的原位膨胀力试验是合理可行的。
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