本文从画法与解析两个方面，探讨了同素变换中的二重元素，并给出了其结论。
This paper mainly discusses the dual element in the same element transformation from the description and analysis, and gives the conclusion.
本文从画法与解析两个方面，探讨了同素变换中的二重元素，并给出了其结论。
This paper mainly discusses the dual element in the same element transformation from the description and analysis, and gives the conclusion.
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