当然我们还不能看到，三元函数的图像，因为它处在一个四维空间里。

Except, of course, we haven't see the graph of a function of three variables because that would live in 4-dimensional space.

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论证了两曲面的交线为空间曲线，其方程为一元四次隐函数关系式；

It is proved that the intersecting line of the two curved surface is space curve, and the equation is quartic implicit function with one unknown.

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利用解析试函数法构造一个内参型四结点八自由度广义协调膜元。

Based on the analytical trial functions, a 4-node 8 degrees-of-freedom generalized conforming plane element with internal parameters is developed in this paper.

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