“阿斯特，J.J.”的概念、定义、翻译、参考文献-科学参考

单词	阿斯特，J.J.
释义	阿斯特，J.J. Encyclopedia 历史学美国历史释 John Jacob Astor阿斯特，J.J. （1763-07-17～1848-03-29）美国德裔商人。
随便看	singular perturbation problem singular perturbation system singular perturbed system singular plane singular plane of support singular point singular point at infinity singular point of a curve singular point of a difference equation singular point of a differential equation singular point of a quadric singular point of a surface singular point of higher order singular point of order k singular probability distribution singular process singular projective transformation singular proposition singular q-cochain singular quadratic form singular quadric singular quadric hypersurface singular saddle point singular semigroup singular sequence

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