以下为句子列表：
英文: Ingredients of ash during the production of terephthalic acid are introduced, possible ash-forming mechanism is analyzed, affecting factors on ash-forming is reviewed, various measures for ash removal are commented.
中文: 摘要介绍了生产对苯二甲酸时产生的灰分的成分，分析了灰分形成的可能机理，叙述了灰分生成的影响因素，对除去灰分的5种措施作了评述。
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英文: It is necessary to further study the mechanism for ash-forming so as to remove the ash effectively and improve the color and quality of terephthalic acid product.
中文: 认为需要进一步研究灰分形成的机理，以有效的除去灰分，改善对苯二甲酸产品的色泽和品质。
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英文: Purified terephthalic acid (PTA), produced mainly by the method of air oxidation of xylene, is a raw material for the polyester industry.
中文: 精对苯二甲酸是聚酯工业的原料，主要采用对二甲苯空气氧化法生产。
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英文: Development of Phthalic Acid N-Octyl,N-Capric Ester
中文: 在DOP装置上改进生产80酯的研究
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英文: AEROBIC DIE-AWAY DEGRADATION OF PHTHALIC ACID ESTERS
中文: 邻苯二甲酸酯鼓泡生物降解
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