Comparison between the simulations of flow-noise of a submarine-like body with four different turbulent models;
探讨了一种新型的潜艇流噪声与螺旋桨噪声的模型试验方法——自航模水动力噪声测试技术。
The fluid pressure pulse and flow-noise in water piping system decreased the operation safety of piping system and hiding ability of submarines.
水管路系统流体压力脉动及其引起的流噪声会降低管路系统自身工作的可靠性和舰船的隐蔽性。
Instead of hindering the flow of information, noise could actually carry it.
噪音可以携带信息，而不是阻碍信息的流动。
Therefore, double screw compressor and worm compressor compared, in the same speed of the units inside less number of exhaust air ripple, big air flow noise.
因此，双螺杆压缩机与蜗杆压缩机相比，在相同转速下单位内排气次数少，气流脉动大，气流噪声大。
Air compressor noise is the main noise source. From the Angle of air flow noise, can be briefly analyzes the following.
气流噪音是空压机的主要噪声源。从气流噪声的角度，可以简要分析如下。
The SPRD will automatically open as the air pressure in the duct system increases, in order to prevent the reduction of air flow and excessive noise and velocity through the duct system.
当管道系统空气压力增加时，SPRD会自动开启，以防止管道系统中空气流动的减少和过度噪音和速度。
Speed is reduced, the pump flow rate will increase instead, and the noise of the pump will be lower, but certainly can't flow theory.
转速降低以后，泵的流量会反而增加，而且泵的噪音会降低，但肯定打不到理论流量。
The tubular cross flow fan is the main component of rotation noise and worm flow noise.
矿用贯流风机噪声的主要成分是旋转噪声和涡流噪声。
Import sampling pump, sampling flow stability, Small noise.
进口采样泵，采样流量稳定，噪音小。
In terms of air flow and noise level, we actively do AMCA Association of industrial and is widely considered to be fan service to a higher ideal height.
在空气流量和噪音水平方面，我们积极的促进AMCA协会而被广泛认为是将风机工业及服务推向了更高的理想高度。
The flow noise reduction of al alloy model with low surface energy coatings have been studied in a water tunnel.
低表面能涂层涂覆在铝合金模型上，考察了其在水筒中低频段降低流噪声的效果。
This paper introduced control valve selection and its application based on the theory of flow characteristic, pressure drop, flashing, cavitation and noise.
针对调节阀的流量特性、压降、闪蒸、气蚀及噪音等问题介绍了调节阀在选型和应用中的要点。
It not only damages flow continuity and reduces medium physical performance, but also induces vibration and noise.
不仅破坏了流体的连续性、降低了介质的物理特性，而且引起振动和噪声。
Flow noise in the interior fluid of a vector hydrophone towed linear array is analyzed.
研究矢量拖曳式线列阵声呐护套管内的流噪声场。
The spatial stochastic distribution of phase concentration would cause a differential pressure noise when two phase flow is crossing a throttling set.
两相流流过节流装置时产生的差压测量噪音是由于相浓度在空间的随机分布所引起的。
It was shown by calculation results that the flow ripple and fluid noise of hydraulic pump increased seriously when the bulk modulus descended.
结果表明，随着油液体积弹性模量的下降，泵的流量脉动及流体噪声均增大。
It is briefly introduced that a set of high flow cavitation noise measuring system has been used recently.
扼要地介绍了一套最近研制成功的高速水流空化噪声测试系统。
This paper has analyzed the relationship of flow, pressure pulsation and noise in hydraulic system, and has inquired into generation and propagation of fluid noise in the system.
本文分析了液压系统流量、压力脉动与噪声的关系，对系统的流体噪声产生与传播进行了一些探讨；
The theoretical and experimental analyses of noise sources in axial flow fans are involved and the methods of noise reduction in fans are summarised in this paper.
本文对轴流风机的噪声源进行了理论和实验分析，对降低风机噪声的方法进行了总结。
In this paper, the mechanism of flow noise production and the methods of flow noise reduction are presented.
本文阐述了水下流噪声产生的机理以及物体表面状态性能对湍流边界层的影响。
The endless flow traffic makes harsh noise that people even can not sleep well at night.
川流不息的车子发出刺耳的噪音，人们在晚上都不能睡个好觉。
The mathematical model of traffic flow and traffic noise was established in this paper upon the fluid mechanics and noise theory.
利用流体力学与噪声理论建立了交通流和交通噪声数学模型。
After calculating the flow field of the pyramidal, the relationship between energy loss, noise and the structure of the valve has been analyzed; the flow channel has been optimized.
应用有限元方法对液压锥阀流场进行数值预报，分析其能量损失，噪声和流场结构的关系，并在此基础上对流道结构进行优化设计。
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。
The sound absorption guiding cone is made of foam material, which can reduce the secondary noise and guide the flow.
吸声导流锥是利用泡沫塑料作吸声体，降低二次噪声，并有导流作用。
Because velocity of flow reduces when the pressure pulse reduces, the noise of impulsion and the noise of vortex increase a little.
因为压力脉动减小导致流速增加，从而使冲击噪声和涡流噪声略有增加。
As I try Xun, yesterday evening, I discovered a trick: Let perception fingers to flow, This will be easily unwanted noise.
就象我在尝试的埙，昨天晚上我发现了窍门：让手指去感知气流，这样就会很容易得到想要的音。
To enhance noise reduction and to improve flow resistance always attend to one thing and lose another in the case of designing silencer for low frequencies noise with high velocity flows.
对需要控制低频噪声的高速气流场合应用消声器，消声量和系统的阻力损失经常成为顾此失彼的二难选择。
The gear form of internal gearing cycloidal gear pump has important influence on machining and characteristics of pump, such as flow rate, fluctuation rate and noise etc.
内啮合摆线转子齿轮油泵的齿形对泵的加工、性能(如：流量、脉动、噪声)等有很大的影响。
The gear form of internal gearing cycloidal gear pump has important influence on machining and characteristics of pump, such as flow rate, fluctuation rate and noise etc.
内啮合摆线转子齿轮油泵的齿形对泵的加工、性能(如：流量、脉动、噪声)等有很大的影响。
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