Piston rings require an oil film between ring and liner and between ring and piston groove to seal against these high pressures and to prevent blowby.
了密封，在活塞环与连杆之间、活塞环与或活塞槽之间需要一层油膜以承受住这些高压、阻
漏气。
Piston rings require an oil film between ring and liner and between ring and piston groove to seal against these high pressures and to prevent blowby.
了密封，在活塞环与连杆之间、活塞环与或活塞槽之间需要一层油膜以承受住这些高压、阻漏气。
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