拓扑性质具有对图形的平移、伸缩、旋转的不变性。
The topological properties for translation, rotation and scale is invariant pattern recognition.
拓扑是一门数学，它研究的对象是物体在平滑变形(例如伸长、挤压、弯曲、但不得切断或连接起来)之下仍会保持不变的性质。
Topology is the mathematical study of properties that are unchanged when an object is smoothly deformed, by actions such as stretching, squashing and bending but not by cutting or joining.
本文综述了关于某些拓扑不变量，六角链的极值和排序问题的一些研究进展及进一步思考。
In this paper, some results and further considerations on the extremes and orderings of hexagonal chains with respect to some topological invariants are introduced.
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