It was also used by other mathematicians to make various forms of progress on the four color problem.

也有人用其他数学家，使各种形式的进展，就四个颜色的问题。

youdao

This paper mainly discusses the problem of how to establish four - color mathematical model of Flexography.

本文主要研究了柔性版印刷四色呈色数学模型的建立问题。

youdao

This paper mainly discusses the problem of how to establish four-color mathematical model of Flexography.

本文主要研究了柔性版印刷四色呈色数学模型的建立问题。

youdao

This paper mainly discusses the problem of how to establish four-color mathematical model of Flexography.

本文主要研究了柔性版印刷四色呈色数学模型的建立问题。

youdao