气缸盖是发动机中最大、最复杂的零部件之一。
Cylinder head is one of the largest and the most complex parts in an engine.
气缸体是摩托车发动机的一个重要部件，采用常规方法处理存在缺陷。
Cylinder block is an important part in motorcycle engine. There exists defects by conventional treatment.
气缸体是摩托车发动机的一个重要部件，采用常规方法处理存在缺陷。
Cylinder block is an important part in motorcycle engine. There exists defects by conventional treatment.
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