\setlength{\unitlength}{0.0125in}%
\begin{picture}(141,101)(39,700)
\thicklines
\put(100,720){\circle{40}}
\put(160,780){\circle{40}}
\put( 60,780){\circle{42}}
\put(155,760){\vector(-4,-3){ 36.800}}
\put( 70,760){\vector( 3,-4){ 19.200}}
\put(140,770){\vector(-1, 0){ 60}}
\put( 80,790){\vector( 1, 0){ 60}}
\put( 95,715){\makebox(0,0)[lb]{\raisebox{0pt}[0pt][0pt]{\twlrm y}}}
\put(155,775){\makebox(0,0)[lb]{\raisebox{0pt}[0pt][0pt]{\twlrm z}}}
\put( 55,775){\makebox(0,0)[lb]{\raisebox{0pt}[0pt][0pt]{\twlrm x}}}
\end{picture}
