Locates source of engine noise quickly.
能迅速确定发动机噪音声源所在。
Exterior and interior engine noise is also reduced.
外观和内饰发动机噪音也随之降低。
The engine noise rises only slightly as I speed along.
我一路高速行驶时，发动机的噪音只提高了一点点。
Analysis and control of engine noise has the significance.
开展对发动机噪声分析及控制研究有重要意义。
You may also notice an increase in engine noise after landing.
飞机着陆后发动机噪音也会加大。
Ways to reduce engine noise for small-wheeled tractors have been indicated.
为小四轮拖拉机发动机的降噪指明了方向。
Synthesised engine noises could even help reduce noise pollution, says Mr Peachey.
皮奇先生说，人工合成的发动机声音甚至有助于减少噪音污染。
The engineers' most important goals are reductions in fuel consumption and jet engine noise.
工程师的最重要目的是减少油耗和发动机噪音。
So a direct method to reduce the engine noise is to insulate the exterior radiation noise.
因此对发动机进行降噪一个直接的方法就是对表面噪声进行屏蔽。
I wanted to listen, see if I could hear any type of engine noise. I could not hear anything.
我想听听，看看我是否能听到任何类型的引擎噪音。我什么也听不到。
The combustion noise control is an important aspect of internal combustion engine noise control.
燃烧噪声控制是内燃机振动与噪声控制领域的一个重要的研究方向。
"Passengers will hear hardly any engine noise," Krein says, "and the same goes for people on the ground."
“乘客将几乎听不到任何发动机的噪音，”Krein说，“地上的人们同样收益。”
They even pipe in engine noise and vibrate the seats to replicate a truly unpleasant airplane dining experience.
他们还往机舱内输入机器噪声，震动座椅，惟妙惟肖地复制出令人不快的飞机就餐体验。
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。
To tackle engine noise, Perkins does things like balancing internal loads to the pump to optimize the overall design.
为了解决发动机噪音，珀金斯并不像内部负载平衡的泵优化的整体设计。
The new Type 62-1 model had air conditioning, a larger fresh water tank, stabilizer fins, and much reduced engine noise.
新的62-1型有了空调，较大的淡水箱，稳定鳍和大量减少了发动机噪音。
We measure the bare engine noise, then rank which particular areas of the engine are producing the highest levels of noise.
我们衡量裸发动机噪音，然后排名特定地区的发动机生产最高水平的噪音。
Because the hydraulic valve plunger automatic control valve clearance is zero gap, simultaneously may reduce the engine noise.
由于液压挺杆自动调节气门间隙为零间隙，同时可降低发动机噪声。
The outstanding repair features in a significant reduction in engine noise, vibration, wear and tear, and the number of maintenance;
超凡的修复功能显著降低发动机工作噪音、减少震动，修复磨损，减少维修次数；
As the bypass ratio of turbofan engine is more and more high, fan noise is a more important part to the overall turbofan engine noise.
随着飞机广泛使用的涡轮风扇发动机涵道比的不断提高，风扇噪声在飞机总噪声中占有越来越突出的地位。
Advantages: up to 20 % lower emissions or up to 5 % more power or up to 3 % lower fuel consumption or up to 3 dB (a) less engine noise.
优点：高达20 %，低排放或高达5 %以上的权力或可高达3 %，降低燃料消耗或高达3分贝(a)以下发动机的噪音。
To minimize wind, road and engine noise , there's a lot of sound insulation located under the hood and floor, and in the doors and dash panel.
为了将风噪，道路和引擎噪音减到最少，乐骋在车顶夹层和地板之下及车门和仪表板里，嵌镶上许多的隔音绝缘填充物。
An experimental study on the engine noise source identification by the method of surface vibration measurement technique is carried out in this paper.
通过测量柴油机表面振动速度的方法对其进行了表面噪声源识别的研究。
Applying the order bi-spectrum in the analysis of engine noise signals shows that it can extract the fault characteristics and realize the state monitoring.
运用此方法对内燃机主轴承不同间隙下的噪声信号进行分析，结果表明，此方法能有效地提取故障的特征，实现状态监测。
Because engine noise takes on complicated frequency characteristics, if original noise signal is not collected, the noise control effect will not be evident.
由于发动机噪声的频率成分比较复杂，如果采用主动降噪技术不能适时采集到源噪声信号，就达不到理想的降噪效果。
Vehicles can start a smooth, shift easily, and significantly reduce engine noise and vibration, effectively improve the performance of the engine and gearbox.
可使车辆起步平稳、换挡轻松，并极大降低发动机噪音和震动，有效提高发动机和变速箱性能。
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.
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。
The two choices of new engine could yield fuel savings of 15% (airlines consider anything above 2% to be meaningful), and will reduce carbon emissions and engine noise.
新引擎的两种选择可以节油15%(航空公司认为节油率超过2%才有意义)，并减少碳排放以及引擎噪音。
The two choices of new engine could yield fuel savings of 15% (airlines consider anything above 2% to be meaningful), and will reduce carbon emissions and engine noise.
新引擎的两种选择可以节油15%(航空公司认为节油率超过2%才有意义)，并减少碳排放以及引擎噪音。
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