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: Abstract: The instruments for measuring sulphuric acid concentration and liquid level in drying and absorption section of sulphuric acid plant,as well as comprehensive control of sulphuric acid concentration and liquid level in different acid-mixing proce
中文: 文摘:介绍了硫酸生产中干吸工序硫酸浓度、液位的检测与控制仪表及其工作原理，以及不同串酸工艺的硫酸浓度和液位的综合控制。
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英文: An even more hazardous device,popular in America,was the Instantaneous Light Box-a bottle filled with sulphuric acid into which splints treated with chemicals were dipped.
中文: 一种更冒险的设备在美国流行，那是个瞬间点燃的盒子-一个盒子里充满了硫磺酸化学药品浸泡处理过的夹板。
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英文: Brand-new mould, OPC, fittings, is it import carbon powder to adopt , can type sulphuric acid paper , make a plate the paper!
中文: 打印效果是跟原装的一样，黑度绝对够黑，质量保证，绝对是精品；如有质量问题的产品，我司包退包换!
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英文: In this paper,it is shown that the direct Sulphuric acid method for producing boric acid with some areas ulexite in Tibet. its percent recovery of single circulation is 8.09%. and its purity conform to GB 8-8.
中文: 本文以西藏某地钠用解石矿为原料，利用酸法一步直接制取硼酸产品，硼酸单程收率达8．09％、产品纯度达GB 8－8指标。
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