“parabolic cylinder”的概念、定义、翻译、参考文献-科学参考

单词	parabolic cylinder
释义	parabolic cylinder Mathematics A cylinder in which the fixed curve is a parabola and the fixed line to which the generators are parallel is perpendicular to the plane of the parabola. It is a quadric and in a suitable coordinate system has equation $\frac{x^{2}}{a^{2}} = \frac{2 y}{b} .$
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