The mathematical model of reentry maneuvering trajectory is established. The fitting expression of aerodynamic coefficient function on velocity, attack of Angle and altitude is presented.

建立了再入机动弹道数学模型，给出了气动力系数为速度、迎角、高度的函数拟合式，进行了最佳再入机动弹道设计和仿真计算。

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A new concept on the displacement operator for beam unit is established, and a method of calculating the deflection Angle of beam unit is then provided.

本文建立了一个梁单元位移算子的新概念，并提供一种梁平面弯曲变形的梁单元位移算子求变形的计算方法。

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At unstable state the formula of calculating unstable time using tangent Angle is established.

对于失稳的情况，建立了用割线角估算失稳时间的一般公式。

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Now that the third mixing angle has been established, these physicists and others can start moving on to other experiments to try to ascertain why the mixing angle is what it is.

FORBES: Anti-Neutrinos May Hold The Key To Solving Physics Mystery