This paper uses several methods of complex functions theorey to prove fundamental theorem of algebra by argument principle, maximum modulus principle and minimum modulus principle.
从复变函数理论出发，利用辐角原理、最大模原理、最小模原理给出代数学基本定理的几种新的证明方法。
Of the problems of optimal control, the most important two optimization methods are Pontryagin minimum(or called maximum) principle and Bellman dynamic programming.
在最优控制中，最重要的两种优化方法是庞特里亚金最小值（或称最大值） 原理和贝尔曼动态规划法。
This principle, which is an extension of the principle that the maximum synthetic working stress is minimum, shows that the elastic working range of the bowl is maximum.
该条件表示转鼓在工作时弹性工作范围最大，它是最大合成工作应力最小原则的一个推广。
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