名词短语
中文翻译：用于定位和卸载的沙筒
同义词：
['sand core', 'sand center', 'sand plug例句：1. The engineer used a sand cylinder to center the machine before starting the operation.（工程师使用一个沙筒来定位机器，然后开始操作。）']
例句：
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1. The engineer used a sand cylinder to center the machine before starting the operation.
工程师使用一个沙筒来定位机器，然后开始操作。
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2. The sand cylinder was crucial in ensuring the stability of the structure during the construction process.
沙筒在施工过程中确保结构稳定性至关重要。
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3. The sand cylinder was removed from the machine after the operation was completed.
操作完成后，从机器中取出了沙筒。