动词短语
中文翻译：冷裂化同义词
同义词：
['refining', 'cracking', 'hydrogenation']
例句：
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1. The cold cracking process is essential for the production of petroleum.
冷裂化过程对于石油生产至关重要。
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2. During the cold cracking process, the oil is subjected to high temperatures and pressures.
在冷裂化过程中，油会受到高温高压的影响。
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3. The hydrogenation process is used to improve the quality of the oil, which is then processed through cold cracking.
氢化过程用于提高油的质量，然后通过冷裂化处理。