在城市下垫面物理性质的研究中，首先引进了热惯量这个特性参数，来分析城市下垫面材料性质。
Introduced a character of the thermal inertia firstly to study on land covering material in urban surface.
颅骨图像在几何上具有对称性特征，根据转动惯量在几何对称性对象上所具有的良好性质，提出一种改进的计算对称轴的算法，该算法利用计算机语言编程实现。
A modified computing symmetry axes algorithm is proposed for the geometry symmetry good property of skull image and the moment of inertia on the symmetry objects.
颅骨图像在几何上具有对称性特征，根据转动惯量在几何对称性对象上所具有的良好性质，提出一种改进的计算对称轴的算法，该算法利用计算机语言编程实现。
A modified computing symmetry axes algorithm is proposed for the geometry symmetry good property of skull image and the moment of inertia on the symmetry objects.
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