cylinder wall

基本解釋

The oil forms a good seal between piston rings and cylinder wall.
機油在活塞環(huán)和氣缸壁之間形成密封油膜。
helong19870606.blog.163.com
You have to mix oil into the gas in a two-stroke engine because the holes in the cylinder wall prevent the use of rings to seal the combustion chamber.
在二沖程發(fā)動機中你必須混和燃料和氣體，因為氣缸壁上的孔阻止使用活塞環(huán)密封燃燒室。
Poor fuel quality. Incomplete combustion and lack of sealing between piston and cylinder wall or badly losing valves. Possibly incorrect engine timing / set up.
燃油品質(zhì)差，不完全燃燒和活塞與氣缸壁之間的密封性差。還有可能不正確的發(fā)動機正時/設置。
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