结果表明，泡沫铝在消除空气动力噪声方面具有优越的性能。
The results show that spongy aluminium alloy has an advantage of muffling the noise caused by air power.
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。
Described are the sound source detection method for the aerodynamic noise on Shinkansen rolling stock and relevant noise reduction measures.
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。
The noise at lower part of railway cars consists of rolling noise, aerodynamic noise and driving device noise.
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。
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.
发动机噪声是汽车的主要噪声源，空气动力噪声是发动机噪声的组成部分之一。
Engine noise is the major noise source of automobile; air power noise is one of composition parts of engine noise.
其噪声源既有机械噪声、空气动力噪声，又有电磁噪声，比较广泛的分布在车间内。
The noises that can be divided into mechanical, aerodynamic and electromagnetic ones are widely distributed in different workshops.
发动机噪声是汽车噪声源的主要部分，它是由多种声源发出的噪声组合而成的，主要包括空气动力噪声和机械噪声和燃烧噪声。
Engine noise is the greatest part of the vehicle noise, it consists of many kinds of noise especially gas kinetic noise, mechanical noise and combustion noise.
在文中阐述了空气动力噪声的特性及产生机理，得出降低空气动力噪声的一些结论，这对于降低汽车发动机噪声提供了有效的方法与思路。
The property of air power noise and mechanism was elaborated, some conclusions that reduce air power noise were drawn. An effective method and idea on reducing automobile engine noise was put forward.
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.
通过对MB503型木工平刨床进行试验模态和空气动力学的分析，确定了木工平刨床的主要噪声源，并进行了实验验证。
Through the analysis of experimental model and air dynamic of type MB503 wood surface planer, and chief noise source was fixed, and was verified by the experiment.
它能够用来分析汽车在高速运动过程中发动机的噪声、轮胎噪声和空气动力学噪声。
Using acoustical holography, some interesting results are shown about the different noises of a high speed vehicle, such as engine noise, tire noise and aerodynamic noise.
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.
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.
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.
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.
对新研制的一种旋流式低温送风口进行了空气动力、速度场、温度场及噪声测试。
A new swirling cold air diffuser has been researched after tests of aerodynamics, the velocity field, the temperature field and yawp.
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.
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."
研制了一种旋流式低温送风口，并进行了空气动力学、低温送风及噪声测试。
Develops a new type of swirling cold air diffuser and tests its performance in aspects of aerodynamics, cold air supply and noise.
研制了一种旋流式低温送风口，并进行了空气动力学、低温送风及噪声测试。
Develops a new type of swirling cold air diffuser and tests its performance in aspects of aerodynamics, cold air supply and noise.
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