According to the quasi-three dimensional theory of hydraulic machinery, this paper discussed the runner design method of the diagonal turbine, based on the blade turbine runner design theory.

本文根据流体机械准三元流动理论，以叶片式流体机械转轮的设计研究方法为出发点，针对斜流式水轮机转轮设计方法进行了理论探讨。

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The solution of the refined theory for simply supported polygonal plates has been obtained; and its numerical result is very close to the exact solution of the three-dimensional theory of elasticity.

文中求得了周边简支多边形板的弹性改进理论解，数值结果与三维弹性理论精确解的结果非常接近。

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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