名词
中文翻译：关闭滚筒
同义词：
['closing mechanism', 'closing device']
例句：
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1.The closing roller is responsible for ensuring the door closes smoothly.
关闭滚筒负责确保门平滑关闭。
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2. The manufacturer has designed a new type of closing roller to improve efficiency.
制造商设计了一种新型的关闭滚筒，以提高效率。
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3. The technician carefully inspected the closing roller before installing it.
技术员在安装之前仔细检查了关闭滚筒。