在石油化学加工中，原料气中含氧化合物的含量有严格的规定。
For strict quality control, a limit is set on the content of oxygenated compounds in the feed stocks of petrochemical processing.
加氢裂化是重油深度加工工艺之一，已在现代炼油和石油化学工业得到广泛应用。
Hydrocracking is one of the most important heavy oil deep conversion processes and has been widely used in modern refining and petrochemical industry.
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