名词短语
中文翻译：底部门卷链带扣紧装置
同义词：
['底部门卷链带扣，底部门卷链带扣紧装置']
例句：
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1.The bottom door winding chain belt fastener is the key to opening the door.
底部门卷链带扣是打开门的关键。
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2. The fastener on the bottom door winding chain belt is easy to use.
底部门卷链带扣的紧固件使用起来很方便。
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3. The fastener on the bottom door winding chain belt is designed to keep the door closed securely.
底部门卷链带扣的紧固件设计用来确保门紧闭并安全锁定。