crude oil upgrading

例句：

1. 1.The refinery is upgrading its crude oil processing equipment to meet new environmental standards.
   炼油厂正在升级其原油加工设备以符合新的环境标准。
2. 2. Crude oil upgrading has become an important part of the energy industry.
   原油提质已成为能源行业的一个重要部分。
3. 3.The upgraded crude oil will have higher quality and better performance.
   升级后的原油将具有更高的质量和更好的性能。