Objective: to establish the measurement method of the normal orbital and optic canal by ct scanned, and to explore the clinical value of the orbital volume and its regressive equation.

目的：建立正常人眼眶及视神经管骨性径线ct测量的方法，探讨CT测量眼眶容积及其回归方程的临床意义。

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A concept of natural formation and a general RT design method are proposed based on the relative Orbital Element method and the relative motion equation in this paper. An example is given.

基于相对轨道根数法，根据卫星相对运动方程，提出了“自然队形”的概念及队形设计的一般方法，并给出了具体的例子。

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Finally, the orbital elements are introduced as state variables and the accelerations are produced by equation as control variables, the space interception model is established.

最后，采用轨道根数作为状态变量，以航天器发动机产生的推力加速度作为控制变量建立空间拦截模型。

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l So, if we're talking about a 4 p orbital, and our equation is n minus 1 minus l, the principle quantum number is 1 4, 1 is 1 -- what is l for a p orbital?

我们方程是n减去1减去，主量子数是，4，1是1，--p轨道的l是多少？,学生：

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