求助一篇論文 Piston ring designs for reduced friction
求助一篇論文:Hill.s.H and Newman.B.A, Piston ring designs for reduced friction.SAE Paper, 1984
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求助一篇論文:Hill.s.H and Newman.B.A, Piston ring designs for reduced friction.SAE Paper, 1984
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大哥,過期了。。