名词
中文翻译：活塞阀衬套
同义词：
['piston liner', "cylinder liner例句：1. The piston valveliner is crucial for the engine's performance.（活塞阀衬套对于发动机的性能至关重要。）"]
例句：
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1. The piston valveliner is crucial for the engine's performance.
活塞阀衬套对于发动机的性能至关重要。
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2. The cylinder liners were designed toreduce friction and improve efficiency.
气缸衬套被设计来减少摩擦并提高效率。
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3. Thepiston valve liner was replaced dueto wear and tear.
由于磨损，活塞阀衬套被更换了。