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
连杆
间、
间需要一层油膜以承受住这些高压、阻止漏气。
间运动时流体的渗漏)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，在连杆间、间需要一层油膜以承受住这些高压、阻止漏气。
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