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.
为了密封，在
塞环与连杆
、塞环与或塞槽需要一层油膜以承受住这些高压、阻止漏气。
塞
时流体的渗漏)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.
为了密封，在塞环与连杆、塞环与或塞槽需要一层油膜以承受住这些高压、阻止漏气。
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