• 1. oil refining: 炼油 | 石油炼化
• 2. oil refining caldron: 炼油锅
• 3. Oil refining machines: 油精炼机器

更多释义

• 1.The country's underground oil refining businesses have grown pretty mature.
  他解释说：“国内的地沟油非法提纯产业已十分成熟。
  dict.yoduao.com
• 2.Principal USES include ore processing, fertilizer manufacturing, oil refining, wastewater processing and chemical synthesis.
  其主要用途包括矿石加工，化肥生产，石油炼制，废水处理和化学合成。
  dict.yoduao.com
• 3.It's used in mining, steel production, oil refining and chemical synthesis, and in the manufacture of fertilisers, detergents and plastics.
  它被用于采矿、炼钢、石油精炼化工，以及制造化肥、洗涤剂和塑料。
  dict.yoduao.com

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