现在来求下被切出的球冠的体积，我们用球坐标来求。

And now, we're going to try to find the volume of that spherical cap again but using spherical coordinates instead.

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尽管粒子是动态的(从原点移开)，但额外的细节是由动态计算纹理坐标来表现体积纹理的不规则表现而产生的。

Although the particles are animating (moving away from the source), added detail is gained by animating the texture coordinates used to calculate the lookup in the the noise volume texture.

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采用有限体积法在桨叶固接坐标系直接求解三维欧拉方程。

The approach is to solve the Euler equations in a rotor fixed frame of reference using a finite volume method.

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