比较分析了两种捕获段水平面轨迹：切线轨迹和弧线轨迹。分别给出了两种轨迹的数学模型以及航程计算公式。
Two kind of horizontal plane trajectories of the Acquisition Phase (AP), Tangential Trajectory and Arc Trajectory, are discussed and predictors of ground track range are given, respectively.
平面解析几何对“求过二次曲线外的点所引曲线切线的方程”的问题，未给出一般的方法和公式。
The problem of attaining the tangent equation of a certain point on a quadratic curve is basically solved in plane analytical geometry.
在推导钢管混凝土轴心受压长柱临界承载力公式时，论文利用材料的切线模量，分别推导了钢材和混凝土的切线模量公式。
As for the limit bearing capacity formula of the concrete filled steel tube long column subjected to axial compress, we lead to the tangent modulus and the conception of metal material.
根据试验结果建立了考虑温度影响的非饱和土抗剪强度公式和切线杨氏模量公式。
The formulas of shear strength and Young's tangent modulus taking account of temperature were proposed.
在此本构模型基础上，利用隐式积分方法，推导出新的应力和背应力积分公式以及整体迭代所需的一致切线刚度矩阵。
Then we establish the constitutive model for simulating the non-massing behavior. Based on radial method and back Euler integration, new stress and back stress integration algorithm are proposed.
在此本构模型基础上，利用隐式积分方法，推导出新的应力和背应力积分公式以及整体迭代所需的一致切线刚度矩阵。
Then we establish the constitutive model for simulating the non-massing behavior. Based on radial method and back Euler integration, new stress and back stress integration algorithm are proposed.
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