To find the solution of power series convergence domain, it is important to get its radius of convergence.
求幂级数收敛域最关键的是求它的收敛半径。
Based on the stress - strain curve uith Power series, the asymptotic nalytical solution of rotating disks uith strain-hardening is obtained from the total strain theory.
采用全量理论和幂级数形式的应力一应变曲线，导出了弹塑性强化材料旋转园盘的渐近解。
Seeking the solution, we have carried out series of tests on power tubes, and have found out simple ways to improve the great power apparatus reliability of aging, selection.
为解决这些问题，我们对所使用的功率管进行了一系列试验，已摸索出一些比较简单的提高大功率器件可靠性的老化、筛选措施。
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