sum of power series的用法和樣例：
例句
- In this paper, by using the property of fourier series a compound series consisting of trigonometric series and power series is established.
摘要利用由三角級數和冪級數複合構成的函數項級數的有關性質，得到了一類變係數非齊次調和方程邊值問題的級數解。 - The relay series and paths are different from the data to the concentrator and return to the target.
發出數據到目標表，從目標表回抄數據列集中器，其中繼級數和路徑往往是不同的。
