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噪声
相关语句
  noise
    Wavelet Adaptive Control System and Its Application to Active Noise Control
    小波自适应控制系统及其在噪声主动控制中的应用研究
短句来源
    Research on Structure Radiant Noise of Rotary Machines and the Mechanism to Control It
    旋转机械结构噪声及其控制机理的研究
短句来源
    Study on Pass-by Accelerating Noise Identification and Control of Automobiles
    车外加速噪声识别与控制的研究
短句来源
    Research on Relevant Theory and Methods for Urban Environmental Noise Problems and Their Application
    城市环境噪声问题的相关理论方法及应用
短句来源
    STATISTICAL CHARACTERISTICS OF INDUSTRIAL EQUIPMENT NOISE
    工业设备噪声的统计特性
短句来源
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  noisy
    Environmental Acoustics and Treatment of Noisy Pollution
    环境声学和噪声污染防治
短句来源
    Research on the traffic noisy pollution effect and countermeasure for residential area——Quanshui residential area in Dalian as an example
    居住区交通噪声污染影响分析及防治对策的研究——以大连市泉水居住区为例
短句来源
    Having investigated the pollution sources (water , air , noise ) along the line at the scene, atmospheric and noisy pollution sources are: bridge prefabricate places , explosion spot, makeshifts , site of earth cutting and discarded earth, the road bed, material pile, mixing and stiring stations etc.
    现场调查了沿线的污染源(水、气、声部分),大气和噪声污染源有:桥头预制厂、爆破点、施工便道、取弃土场、路基面、隧道作业、材料堆及拌和站等;
短句来源
    The envionmental acoustics was introduced as a new brink subject, it is expounded that the environmental acoustics is related to noisy research and treatment of noisy pollution.
    概括介绍环境声学这一新兴的边缘学科,指出了噪声研究和噪声污染防治与这一学科的 关系
短句来源
  noise-pollution
    Noise-pollution has been named as one of four major harms of environmental problems in cities.
    环境噪声污染自本世纪70年代被称为城市环境问题的四大公害之一。
短句来源
  “噪声”译为未确定词的双语例句
    A Special Application of Foxbase+ in Data Processing of Environmental Monitoring
    FOXBASE + 编程在噪声监测数据修约中的应用
短句来源
    Its design experience has the practical reference value to the similar enterprises.
    其噪声控制的设计经验对同类企业的噪声治理有实用的参考价值。
    NN—1 type automatic psophometer—three monitoring functions extended
    NN—1型全自动噪声监测仪——扩展三种监测功能
短句来源
    The impact on the function of noise-measuring instrument by environmental temperature
    环境温度对噪声测量仪器性能的影响
短句来源
    Application of Fuzzy Chstering in the City Environmental Nois Sectioning
    模糊聚类在城市环境噪声区划中的应用
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  noise
Wavelets, generalized white noise and fractional integration: The synthesis of fractional Brownian motion
      
However, unlike the values of f(n)(t0), the values of the chromatic derivatives Kn[f](t0) can be obtained in a noise robust way from sufficiently dense samples of f(t).
      
This receiver simultaneously combats multipleaccess interference (MAI) and non-Gaussian impulsive noise.
      
This paper studies the characteristics of this type of image with complex shape target or noise and presents an improved Snake algorithm.
      
The simulation results indicate that the new Snake model greatly decreases the dependence on the Snake point's initial position and effectively overcomes noise influence.
      
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  noisy
Weak fault features of mechanical signals are usually immersed in noisy signals.
      
For ensuring the safety of QSDC with single photons and quantum information sharing of single qubit in a noisy channel, a quantum privacy amplification protocol has been proposed.
      
Adaptive Synthesis of Nonlinear Dynamic Systems under Noisy Control
      
Recognition of noisy pictures of Arabic numerals was accompanied by an increase in EEG coherence in the frontal cortical regions, especially in the left hemisphere, and between the frontal and occipital areas in both left and right hemispheres.
      
The human EEG in recognition of noisy visual images accompanied by music
      
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  noise-pollution
Most European cities are confronted with problems regarding airand noise-pollution and congestion caused by motorised road traffic.
      


Blow-down noise is an important source of noise pollution, and rather bulky and complex constructions are needed in order to reduce it to a degree harmless to people, by ordinary methods. In recent years, investigations show that the hazardous noise will be greatly reduced by replacing the large exhaust nozzle with a number of small nozzles, and quantitative relations were found. Based on these relations, simple and inexpensive micropore mufflers are developed, attaining noise reductions of more than 40dB. At...

Blow-down noise is an important source of noise pollution, and rather bulky and complex constructions are needed in order to reduce it to a degree harmless to people, by ordinary methods. In recent years, investigations show that the hazardous noise will be greatly reduced by replacing the large exhaust nozzle with a number of small nozzles, and quantitative relations were found. Based on these relations, simple and inexpensive micropore mufflers are developed, attaining noise reductions of more than 40dB. At low pressures, however, the diffuser-mufflers are very effective, the flow diffusion theory for such kind of mufflers is also developed in this paper.

排气噪声噪声污染的重要祸源,用一般消声方法使它降低到对人无害的程度,常需要构造复杂的庞大装置.在近几年的研究工作中,我们发现用多数小喷口代替排气的大喷口可使其所产生的噪声中对人干扰的部分大大减少,并求得定量关系.根据这种关系而设计的小孔消声器,构造简单,价格低廉,在大型排气系统中可降低噪声到40分贝以上.不用小孔特性,而利用气流扩散原理所得的扩散消声器,在低压时也非常有效.本文也提出定量关系.

Like traffic noise, noise from industrial equipments affects the neighborhoods around the plant. Measurements on noise of the most common industrial sources have been made. The results are based primarily on measurements out of 200 plants selected from thirteen manufacturing industrial categories. Data show that distribution of noise levels in dBA for industrial equipments is in the form of normal distribution, with a probability function

对13种制造工业的200家工厂工业噪声源进行了测量,测量结果表明,工业设备噪声级dBA的分布是一个正态分布,具有分布函数P(L_A)=1/(2π)~(1/2)σexp〔-(L_A-L_(50))~2/2σ~2〕.若A声级的概率分布是理想的高斯分布,则从噪声级的正态分布曲线上所得到的L_(10)、L_(15)、L_(50)、L_(84)和L_(90)声级,可以用来计算Leq和σ.实验可得出常用工业设备产生的噪声级的范围及其统计特性.

Environmental noise monitoring instruments made in ourcountry are not wholly automatic.Therefore,there are a lot of difficu-lties on site measureing,for example,the reading interval can not beeasily controlled,the metering range was not wide enough to changeover quickly,the time for data processing was too long.This articlepresented a scheme of the 5-second chronopher,the reading method ofcombined instruments.Two BASIC programmes for data processing wasintroduced which used in microcomputers SHARP pc-1501 and...

Environmental noise monitoring instruments made in ourcountry are not wholly automatic.Therefore,there are a lot of difficu-lties on site measureing,for example,the reading interval can not beeasily controlled,the metering range was not wide enough to changeover quickly,the time for data processing was too long.This articlepresented a scheme of the 5-second chronopher,the reading method ofcombined instruments.Two BASIC programmes for data processing wasintroduced which used in microcomputers SHARP pc-1501 and R-1(with 32k extended module),and the programmes of assessment of en-vironmental region noise and traffic noise used in CROMEMCO microco-mputer were given.

国产环境噪声监测仪尚未实现自动化。实际测量中出现不少困难,如读数间隔时间不易控制;声级计的单档量程不够宽,读数时往往来不及换档;数据的摧理和处理时间太长等等。本文给出了五秒报时器线路图、组合仪器读数法、用SHARP PC—1501和R—1(装上32K扩展块)两种微电脑处理噪声数据的BASIC程序以及用CROMEMCO微电脑对环境区域噪声和交通噪声进行评价的程序。

 
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