Again the old car you can choose appropriate viscosity of older oil to increase the sealing performance of the piston and cylinder wall between.
再次老旧车可以适当选用黏度稍大点的机油来增加活塞、缸壁间的密封性。
The dust will also cause bearing, cylinder-wall, and piston and ring wear.
灰尘同．样也会导致轴承、气缸壁、活塞和活塞环的磨损。
The main section of a piston is known as the skirts. It forms a bearing area in contact with the cylinder wall.
活塞的主要部分叫活塞裙部。其与气缸壁接触形成了支承面。
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