名词中文翻译
中文翻译：上阀门盖
同义词：
['upper valve', 'upper valve cover', 'upper valve cap']
例句：
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1. The engineer carefully replaced the old upper valve cap with a new one.
工程师仔细地用一个新的上阀门盖替换了旧的。
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2. During maintenance, the technician found and replaced the upper valve cap that was damaged.
在维护期间，技术员找到了并更换了损坏的上阀门盖。
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3.The upper valve cap is essential for maintaining proper air pressure in the engine.
上阀门盖对于保持发动机内适当的气压至关重要。