每个地图投影都弯曲距离、面积、形状、方向或它们的组合。
Every map projection distorts distance, area, shape, direction, or some combination thereof.
这一组合技术可能成为今后该领域研究的一个重要方向。
This composite technique may become an important part of research in this field in future.
它为数学系组合论与图论方向研究生准备硕士论文的课程。
It provides some help for graduate students to prepare Master's thesis.
它为数学系组合论与图论方向研究生准备硕士论文的课程。
It provides some help for graduate students to prepare Master's thesis.
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