adj.仿射（几何学）的姻亲
n.姻亲
This paper concerns the ratio of centro - affine invarients for a projection body.
摘要本文研究了关于投影体的中心仿射不变量比的问题.
Affine invariance is an important research field about it.
仿射变换不变性是其中一个重要的研究内容.
This type is called affine.
这叫做仿射交换.
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