以下为句子列表：
英文: Abstract: Methods and main equipment of waste heat recovery in sulphur-buring sulphuric acid plants are described.
中文: 文摘:系统阐述了硫磺制酸生产过程中的废热回收方法、主要设备和提高热回收率的措施。
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英文: For saving energy with waste heat recovery thermo-acoustic engine is a promising way due to its simple structure, absence of pollution and low cost.
中文: 摘要以低温排热的有效利用为目的，设计制作了一台热声发动机的实验样机。
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