采用薄板等积变换通过局部弯曲而不拉伸材料的方法制造该种芯材已成为可能。

This feature makes it possible to produce the filler by isometric transformation of thin sheet through local bending without material stretching.

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通过把劲度系数扩展为矩阵形式，拉伸弹簧的形变与弹力在罗伦兹变换中得到了统一。

By extending stiffness coefficient into stiffness matrix, the deformation and elastic force of tensile-spring coincides with Lorentz transformation.

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提出了一种基于一类特殊小波变换对三维编织复合材料拉伸断面进行图像处理、测量复合材料纤维体积含量的方法。

In this paper, a special wavelet transform used to analyze snapped section surface image of three-dimensional braided composite material and detect the fiber volume fraction is proposed.

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