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1. Oxford Dictionary

   power series

   • n.
     an infinite series of the form Σa n x n (where n is a positive integer).；a generalization of a power series for more than one variable.

   • noun: power series, plural noun: power series

2. • 更多解釋

   power series

   • IPA[ˈpou(ə)r ˈsirēz]

   • n.
     an infinite series of the form Σa n x n (where n is a positive integer).

   Oxford American Dictionary