... knott's equation 诺特方程 knotty structure 瘤状构造 know-how 专门技能；技术决窍 ...
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Finally the author use his own new idea explain knotty questions appearing in the history and further analyze and explain the economic reasons causing the structure change in stock index.
随后运用笔者新的提法解释了历史上出现的疑难问题，最后也依笔者的思路分析并解释了上证指数结构突变的经济原因。
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