Process of acid production from refinery acid gas is described.
介绍炼厂酸性气制硫酸装置的工艺过程.
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Workplace air - Determination of formic acid Gas chromatographic method.
车间空气中甲酸的气相色谱测定方法.
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The ore was heated in the kilns to drive off water and carbonic acid gas.
矿石被放入窑里加热,蒸发掉水和碳酸气.
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