Engine noise is the major noise source of automobile; air power noise is one of composition parts of engine noise.
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。
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.
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 low power, low noise, blower fan, wind knife mouth dry air temperature is used, the effective protection of material itself color and quality, the effect is better.
采用低功率、低噪音的风机，吹风口成风刀状，吹干风温为常用温，有效保护物料本身的色泽和品质，效果更佳。
The results show that spongy aluminium alloy has an advantage of muffling the noise caused by air power.
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 technology of applying converter to control sewage and air pump noise is introduced in this article. It's used to reduce noise and save power. The technology is practical and economic.
叙述了采用变频调速技术控制污水处理空气泵噪声的方法，既降噪，又节电，经济实用。
Local put low power, the noise is small, cooling function of strong, forced air cooling conditions can be 150% rated load operation.
局部放电量低，噪音小，散热功能强、强迫风冷条件下可以150%额定负载运行。
Local put low power, the noise is small, cooling function of strong, forced air cooling conditions can be 150% rated load operation.
局部放电量低，噪音小，散热功能强、强迫风冷条件下可以150%额定负载运行。
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