求翻译：船用柴油机在长期运转过程中，尽管活塞环与气缸套发生的摩擦、磨损是不可避免的，但可以根据实际情况采取有效措施避免缸套的异常磨损，提高船舶营运的安全性与经济性。常见的缸套磨损机理可分为粘着磨损、磨粒磨损、腐蚀磨损和疲劳磨损四大类。本文通过对缸套发生异常磨损的分析，找出避免主机缸套发生异常磨损的有效措施，提出主机日常管理中的合理操作和适当的保养方法及注意事项，以达到避免缸套产生异常磨损、延长主机的使用寿命的目的。是什么意思？

In the long running process, the marine diesel engine piston ring and cylinder liner friction, wear and tear is inevitable, but according to the actual situation and take effective measures to avoid abnormal wear of the cylinder liner to improve the operation of the ship's security and economy. Comm

marine diesel engine in the long-term process, despite running rings and the cylinder liner wear, friction is inevitable, but can be based on the circumstances to take effective measures to avoid liner wear, and improve the operation of the ship security and economy. Common cylinder liner wear down,

Ship with diesel engine in long-term generating process, although the piston curl and the cylinder liner occurs the friction, the attrition are inevitable, but may act according to the actual situation to take the effective action to avoid the cylinder jacket the exceptionally attrition, enhances th

Marine diesel engines in the long running process, despite the friction and wear of piston ring and cylinder liner is inevitable, but depending on the situation and take effective measures to avoid abnormal wear of the cylinder, improving the operation of the ship's security and economy. Common cyli

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