In this paper, the stress and strain of the O-type sealing ring moving back and forth between piston and hydraulic vat are analyzed, so the frictional force of the O-type sealing ring can be obtained.是什么意思_In this paper, the stress and strain of the O-type sealing ring moving back and forth between piston and hydraulic vat are analyzed, so the frictional force of the O-type sealing ring can be obtained.在线翻译_英语_读音_用法_例句