名词
中文翻译：滑轮框架
同义词：
['Pulley holder', 'Pulley holder assembly', 'Pulley holder mechanism']
例句：
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1. The pulley frame isessential for the operation of the elevator.
滑轮框架对于电梯的运行至关重要。
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2. The engineercarefully assembled the pulley frame before startingthe project.
工程师在开始项目之前仔细组装了滑轮框架。
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3. The pulley frame was designed toreduce friction and improve efficiency.
滑轮框架的设计旨在减少摩擦并提高效率。