名词
中文翻译：Unknown
同义词：
['refining', 'refining', 'refinement']
例句：
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1. The process of underrefining involves removing impurities from the raw material to produce a more refined product.
下加工过程涉及从原始材料中去除杂质，以生产更精细的产品。
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2. The refinery is the final stage of underrefining where the crude oil is upgraded to high-quality petroleumproducts.
炼油厂是下加工的最终阶段，将原油升级为高质量的石油产品。
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3. The company's underrefining technology has significantly improved the quality of their products, leading to increased market share.
该公司的下加工技术显著提高了其产品的质量，导致市场份额的增加。