求翻译：6、看工艺。伪劣产品外观虽然不错，但由于制作工艺差，容易出现烈纹、砂孔、夹渣、毛刺或碰伤。比如气缸垫挤压变形，使用时容易引起密封不严而烧蚀，导致漏油、漏气和漏水等现象；活塞及活塞环工作表面有毛刺容易拉缸。是什么意思？

6, see the process. Appearance of fake and shoddy products is good, but because of the poor technology, prone to strong sheath, slag, sand hole, burrs or scratches. Such as cylinder head gasket extrusion deformation, easily lead to lax sealing when used and ablation, resulting in oil spills, leakage and leakage phenomenon; Burr easy cylinder piston and piston ring surface.