以下为句子列表：
英文: 417 The transfer medium in this pipeline is liquid ammonia (process air , soft water, alkali liquor, acidic gas).
中文: 这条管线的输送介质为液氨（工艺空气、软水、碱液、酸性气体）。
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英文: Failure occurs in the operation of the liquid ammonia transfer pump, so an analysis is made of the causes for its failure.
中文: 摘要介绍液氨输送泵在生产过程中出现的故障，对产生故障的原因进行分析。
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