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1·Noise is included aerodynamic noise and structure noise.

噪声主要包括气动噪声和结构噪声。

2·The vibration force acting on the fluid directly comes into being the aerodynamic noise.

气动噪声是由直接作用在流体上的振动力产生。

3·The key point of reducing noise of 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。

4·In this paper, some schemes of reducing the aerodynamic noise are proposed for multi-blade centrifugal fans.

针对多翼离心风机气动噪声的主要噪声源提出降噪方案。

5·The noise at lower part of railway cars consists of rolling noise, aerodynamic noise and driving device noise.

铁道车辆下部噪声主要由滚动噪声、空气动力噪声和机器噪声组成。

6·The effect of protecting mesh of air conditioner outdoor unit on aerodynamic noise is studied with experimental method.

采用试验研究的方法，研究了某型空调器室外机组防护网对气动噪声的影响。

7·Proposes a theoretical model for aerodynamic noise transmitting towards interior cab of an automobile on the basis of the wind experiment.

在风洞实验的基础上，提出了气流噪声向汽车内部传播的理论模型。

8·Described are the sound source detection method for the aerodynamic noise on Shinkansen rolling stock and relevant noise reduction measures.

介绍了新干线车辆空气动力噪声的声源探测方法及相应的降噪措施。

9·The aerodynamic noise strength of the centrifugal blower is bigger, and it is the main block in the centrifugal blower noise, and don't easy to control.

通风机空气动力噪声强度大是通风机噪声的主要部分，且不易控制。

10·According to the aerodynamic noise analysis of cross flow fans, investigates the mechanism of reducing noise due to the adoption of non-isometric impellers.

根据对贯流风机气动噪声的分析，研究了采用不等距叶轮的降噪机理。