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1.The chemical rust removing process is crucial for the preservation of metals.
化学除锈过程对于金属的保存至关重要。
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2.The factory uses a special chemical to remove rust from its machinery.
这家工厂使用一种特殊的化学物质来去除其机械上的锈。
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3. The rust removal process requires careful monitoring to prevent any environmental contamination.
除锈过程需要仔细监控，以防止任何环境污染。