By discussing the content of dual operations,dual figures and dual principle,the article puts forward the concept of dual method, and expound further the use of dual principle and dual method in the higher geometry and wide use in other subject
本文通过论述对偶运算、对偶图形、对偶原理等内容,提出了对偶方法的概念,并阐明对偶原理及其方法在高等几何中的作用与其他学科中的广泛应
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