本文介绍了两道典型题目在一些特殊点上的求解方法。
In this paper, we introduced some methods to solve two typical questions at some special points.
完全可以使用计算机对柯氏公式进行迭代求解，但首先必须解决迭代计算的收敛区间问题，这个问题目前尚无明确的结论。
At present, computer can be used to iteratively solving Colebrook's formula, but first the problem about the convergence interval of iterative calculation must be solved.
对静电学中用电象法求解两无穷大接地金属板间楔形区域内的电场的题目，利用群论方法加以讨论，给出了可求解的条件及一般的象电荷分布。
A sort of electrostatics problem that using electric image method to solve the electric field in the wedge area between two infinite earthing metal boards are discussed using group theory.
认为中国古代数学家求解这类问题的基本思想方法是设法减少题目中未知元的个数，使不定解的问题转化为确定解的问题。
It points out that the main idea of ancient Chinese mathematicians for calculating such problems was to change an indeterminate problem into a determinate one.
认为中国古代数学家求解这类问题的基本思想方法是设法减少题目中未知元的个数，使不定解的问题转化为确定解的问题。
It points out that the main idea of ancient Chinese mathematicians for calculating such problems was to change an indeterminate problem into a determinate one.
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