名词
中文翻译：次要分馏器
同义词：
['secondary distiller', 'secondary distillation apparatus']
例句：
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1. The secondaryfractionator is used to separate impurities from the crude oil.
二次分馏器用于从原油中分离杂质。
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2.The process of secondary fractionation is crucial for the purification of petroleum.
二次分馏过程对于石油的提纯至关重要。
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3. The secondary fractionator was designed to improve the yield of refined oil.
二次分馏器的设计目的是为了提高精炼油的产量。