Beer foam is one of the critical factor of determining beer quality and is the first character of estimating the beer quality by the consumer.
啤酒泡沫是决定啤酒质量的重要因素之一，也是消费者评价啤酒质量好坏的第一特征。
Theoretical results showed that EORD, using general elastomer O-rings with loss-factor between 0.1 and 0.4, was enough to reduce first critical response vibrations of the experimental rotor system.
理论分析表明，采用损耗因子在0.1至0.4之间的常用的橡胶O型圈，即可极大地降低一阶临界振动响应。
Theoretical results showed that EORD, using general elastomer O-rings with loss-factor between 0.1 and 0.4, was enough to reduce first critical response vibrations of the experimental rotor system.
理论分析表明，采用损耗因子在0.1至0.4之间的常用的橡胶O型圈，即可极大地降低一阶临界振动响应。
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