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。
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。
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。
The results show that the engine noise is additive weak-intensity continuous spectrum or compound spectrum and for some frequencies it is both continuous and linear.
结果表明：发动机噪声主要是加性、低强度的连续频谱，在某几个频率成分上也分布着线状频谱。
From the result, we know the fan noise is mostly a width frequency noise, then obtain the effect of the fan noise on the engine noise in the different frequency range.
试验结果表明，风扇噪声主要是宽频带噪声，并得出了在不同频率范围风扇噪声对发动机噪声的影响。
Based on the structural improvement, it not only control the engine noise from root, but also can improve the engine performance without adding the complexity to the engine.
通过结构改进进行低噪声发动机设计，不仅可以在根源上控制发动机噪声，而且可以改善发动机的性能，还不会使发动机结构变得复杂。
Unbalanced two-stage reciprocating inertia force can be balanced by using Lanchester's double-shaft balance system, so that the engine noise and vibration could be reduced notably.
采用兰氏双轴平衡系统，可以平衡二阶往复惯性力，使柴油机的噪声和振动明显下降。
I can't spare a week, so instead, I help him unload fish from the hold of the Lauren Dorothy, a friend's boat, while music blares over the noise of the engine.
我一周也抽不出时间，只好帮他把鱼从朋友的小船劳伦·多萝西号的船舱里卸下来，与此同时，音乐声盖过了引擎的噪音。
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。
After being immersed in such profound silence for so long, the noise of the engine seemed louder than ever.
在那个安静至极的地方呆了这么长时间以后，马达的声音真有点震耳欲聋。
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。
Comprehensive SeatGuru content is available for the first time ever in a flight search engine through colour-coded maps with detailed information about each seat, from legroom to noise levels.
综合性的SeatGuru座位布局内容首次被应用到机票搜索引擎上，通过颜色显示的地图可以标注每个座位的详细信息，包括坐距和噪音。
The noise excited by impact and vibration of gear pairs in automobile engine is one of the main sources of noise.
汽车发动机齿轮系统冲击振动所引起的噪声，是发动机噪声的主要来源之一。
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。
The exhaust system reduces the noise of the burned gases leaving the engine cylinders and carries these exhaust gases safely away from the people in the car.
排气系统可以降低从发动机气缸排出的已燃废弃的噪声，并且安全地将这些废气带走使其远离汽车内的人。
The research results show that the engine combustion noise can be reduced by reducing the combustion pressure oscillation in combustion chamber.
研究结果表明，通过减小缸内压力振荡可降低直喷式柴油机的燃烧噪声。
Among other available heat engines, the stifling engine embodies some interesting features: high efficiency, low noise and vibration as well as the ability to use the sources of high energy density.
在其他各种热动力中，热气机具有许多特点：高效率，低噪音和振动，以及可利用高能量密度的各种热源等。
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。
Noise source identification for the model GZ6921 bus having rear mounted engine has been car ried out by means of the noise source identification model with testing and analysing system recommended.
运用该噪声识别模型及所介绍的测试分析系统，对GZ 6921型后置发动机客车噪声源进行了识别。
More and more automobile enterprises have attached important to research into the control of radiated noise from engine surface.
对发动机表面辐射噪声控制的研究已受到越来越多的汽车生产企业的重视。
They thus absorb engine vibration and noise. They prevent this vibration and noise from being carried directly to the frame and consequently to the car Body and passengers.
这样可以吸收发动机的振动和噪音，阻止它们直接传到车架上，进而传给车身和乘客。
The noise in city mainly comes from the vehicle and the vehicle noise mostly from the engine.
城市噪声的主要来源是车辆噪声，而发动机噪声又是车辆噪声的主要组成部分。
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。
The car noise admission and exhaust system of the engine is a very important problem, therefore we must adopt innovative technic to reduce noise.
汽车发动机进排气系统的噪声在发动机总噪声中占有重要分量，因此需要积极采取降噪措施。
According to the exhaust noise characteristics of special engine and the installation request of exhaust muffler, the exhaust muffler for special engine was designed.
根据特种发动机排气噪声的特性和消声器的安装要求，设计了一个组合式排气消声器。
The experiment results indicated that this calculation method was precise, providing a good basis for the optimized design of the engine with low noise.
试验结果表明该方法有较高的计算精度，为发动机噪声优化设计打下了良好的基础。
The experiment results indicated that this calculation method was precise, providing a good basis for the optimized design of the engine with low noise.
试验结果表明该方法有较高的计算精度，为发动机噪声优化设计打下了良好的基础。
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