名词中文翻译
中文翻译：阀门封套
同义词：
['valve cover', 'valvejacket']
例句：
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1. The valveenvelope is designed to protect the valve fromdamage during operation.
阀门封套的设计是为了在操作过程中保护阀门免受损坏。
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2. Theengineer carefully inspected the valve envelope beforeinstalling it.
工程师在安装前仔细检查了阀门封套。
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3. The valve envelope wasmade of high-quality materials to ensurelong lifespan and durability.
阀门封套由高质量的材料制成，以确保其具有长寿命和耐用性。