【摘要】 国外一些学者曾对活塞环回转运动进行过研究，在此基础上，本文对活塞环的回转运动机理进行初步探讨，建立了相关数学模型，给出了活塞回转运动的力学判据。更多还原

【Abstract】 Rotation of piston ring was studied by some foreign scholars. Based on this,the rotation mechanism of piston ring in engine has been investigated, some relative mathematical models have been established and a mechanical method of judgment for piston ring’s rotation has been given in this paper.更多还原