真空伏辊空气动力性噪声是造纸机的主噪声源。
The aerodynamical noise of vacuum couch roll is the major noise source of paper machine.
人造板机械的噪声主要有机械噪声和空气动力性噪声。
The noise of wood-based panel machinery mainly includes mechanical noise, air dynamic noise, etc.
降低真空伏辊空气动力性噪声是降低抄纸机噪声的关键。
The key point of reducing noise of paper machine is to reduce aerodynamic noise of vacuum couch.
通过对离心风机噪声源的分析，进一步确认空气动力性噪声最强。
The noise from the centrifugal fan is measured and analyzed. It shows that air dynamic noise is primary one. for control air dynamic noise.
通过分析风机叶片噪声的类型，研究风机叶片产生空气动力性噪声的机理。
The fan blades noise types are analyzed. It studies fan blades airflow dynamic noise principle.
并知空压机的空气动力性噪声呈低频特性，这为噪声及振动控制提供了可靠的依据。
The knowing noise of the air compressor "s air dynamic is of low frequencies. The reliable data is provided for the noise and vibration control."
本文设计了真空伏辊实验模拟装置，并在其基础上通过实验研究，提出降低真空伏辊空气动力性噪声的方法。
We design the laboratorial device of vacuum couch roll and base on the experimental research, we put forward some solution to reduce aerodynamical noise of vacuum couch roll.
本文设计了真空伏辊实验模拟装置，并在其基础上通过实验研究，提出降低真空伏辊空气动力性噪声的方法。
We design the laboratorial device of vacuum couch roll and base on the experimental research, we put forward some solution to reduce aerodynamical noise of vacuum couch roll.
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