名词
中文翻译：桶塞
同义词：
['barrel lock', 'barrel nut']
例句：
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1.The barrel bolts were rusted and needed to be replaced.
桶塞生锈了，需要更换。
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2.The barrel bolts are used to secure the barrel to the gun.
桶塞用于将桶固定在枪上。
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3.The barrel bolts must be tightened properly to prevent leaks.
桶塞必须正确拧紧，以防止泄漏。