In chapter 3 partitioned variational principles of 3-dimensional theory of elasticity are researched.

第三章研究3维弹性理论分区变分原理。

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Based on the three dimensional theory, an analysis and summary is made on the sentences and subjects of.

本文在“三个平面”语法观的理论背景下，对《礼记》的句子与主语进行分析归纳。

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The problem with a two-dimensional theory is that it is unphysical, as we see four dimensions at our scales.

但二维理论又存在非物质性的问题，因为我们所在的尺度看到的是四个维。

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Likewise, one learns to cope with the infinitely dimensional space of quantum theory.

WSJ: Book Review: Surfaces and Essences

Einstein's theory of relativity unified these and created a four-dimensional space that is an analogue to our three-dimensional space, except that the "distance" between two points need not be positive.

WSJ: Book Review: Surfaces and Essences