The pistonlands are parts of piston between the ring grooves. The lands provide a seating surface for the sides of piston rings.
活塞环槽岸是活塞环槽之间的部分。其为活塞环边提供支持面。
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Rings must remain free to function properly and to maintain a good seal. Deposit build up in the ring grooves and on pistonlands must therefore be controlled.