Industrial - process control valves - Part 8 - 3 : noise considerations - Control valves aerodynamic noise prediction method.

工业过程控制阀.第8部分:噪声问题.第3节: 气动控制阀噪声预测法.

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Noise is included aerodynamic noise and structure noise.

噪声主要包括气动噪声和结构噪声.

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The key point of reducing noise paper machine is to reduce aerodynamic noise of vacuum couch.

降低真空伏辊空气动力性噪声是降低抄纸机噪声的关键.

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