以下为句子列表：
英文: 1 In air separation, liquid carbon dioxide, dissolved acetylene and cylinder filling plants, various chemicals are used for such operations as purifying, cooling, drying, water treatment, cleaning, etc...
中文: 在空分、液态二氧化碳、溶解乙炔和气瓶充装车间，在生产中均会用到各种化学品，它们被用于纯化、冷却、干燥、水处理和清洗等。
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