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\documentclass{article}
\usepackage{pst-solides3d}
\pagestyle{empty}
\begin{document}
\begin{pspicture}(-3,-3)(3,5)
\psset{viewpoint=60 80 30 rtp2xyz,Decran=60,lightsrc=viewpoint,solidmemory}
\psSolid[object=anneau,h=1.7,R=4.4,r=3.8,name=A1,action=none,hue=0 1](0,0, 0.77)
\psSolid[object=anneau,h=0.6,R=5,r=4.4, name=A2,action=none](0,0,0.46)
\psSolid[object=fusion,base=A1 A2]
\end{pspicture}
\end{document}
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