单词：refining process
refining process的用法和样例：
例句
- Petroleum coke is a fuel produced using the byproducts of the petroleum refining process.石油焦炭是一种燃料，是由石油提炼过程中的副产品加工而成的。
- 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.将许多金属硫化物的矿石焙烧是提炼过程的一个部分，焙烧过程产生二氧化硫，还原为硫磺后可用于硫酸工业。
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