求翻译：尽管成本理论分为短期理论和长期理论，但长期成本理论也仅仅是短期成本理论的扩展，其基本分析思路是把一个长期分解为若干个短期。是什么意思？

Cost theory is divided into short-term theory and long-term theory, but the long-term cost theory is just an extension of the short-term cost theory, the fundamental analysis idea is a long-term broken down into a number of short-term.

Although cost theory is divided into short-term and long-term theoretical theory, but in the long term cost theory is only a short-term cost theory of expansion, and the basic idea is to analyze a long-term decomposition for a number of short-term.

Although the cost theory divides into the short-term theory and the long-term theory, but the long-term cost theory also merely is the short-term cost theory expansion, its basic analysis mentality is decomposes for a long time one into certain short-terms.

Although the cost is divided into short-term and long-term theory, but the long-term cost theory is only short-term cost theory of extension, the basic analysis is a long-term decomposition into several short term.

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