In this paper, deeply research was made from tube semifinished product to bubble which is about distribute of radius and thick, and draw own conclusion.

文中深入研究了从管坯到薄膜吹胀成型过程中的厚度分布变化和半径分布变化，并给出了结论。

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n So the velocity is given by this product of the quantum number n Planck constant 2 pi mass of the electron time the radius of the orbit, which itself is a function of n.

速度是量子数,普朗克常数2π乘以轨道半径的值,它自身也是n的函数。

麻省理工公开课 - 固态化学导论课程节选