Focusing on draft beer foam stability, the paper puts much attention to the deciding factors, decline principle and control technology.

重点研究了纯生啤酒泡沫稳定性的影响因素、衰减规律及控制技术。

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Common flaws such as weak foam stability and increasing decline with shelf life are found in draft beer on present market.

目前，市售的纯生啤酒在泡沫稳定性方面普遍存在明显的缺陷，即泡沫稳定性差，并随着货架时间的延长而逐渐下降。

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