refining process的用法和樣例：
例句
- Petroleum coke is a fuel produced using the byproducts of the petroleum refining process.
石油焦炭是一種燃料，是由石油提煉過程中的副產品加工而成的。 - Many sulfide-containing metal ores are burned as part of the extraction process, giving off sulphur dioxide, which can be recovered and used in the sulphuric acid industry.
將許多金屬硫化物的礦石焙燒是提煉過程的一個部分，焙燒過程產生二氧化硫，還原為硫磺后可用於硫酸工業。
