風機噪聲 的英文怎麼說

中文拼音 [fēngjīzàoshēng]
風機噪聲 英文
fan noise
  • 風 : Ⅰ名詞1 （空氣流動） wind 2 （風氣; 風俗） practice; atmosphere; custom 3 （景象） scene; view 4 ...
  • 機 : machineengine
  • 噪 : 動詞1. （蟲或鳥叫） chirp 2. （大聲叫嚷） make noise; make an uproar; clamour
  1. The noise of the fan is mainly consist of circumrotatory noise and backset noise based on the theoretical analysis

    首先基於風機噪聲理論的分析確定了影響風機噪聲源的主要因素是旋轉噪聲和渦流噪聲。
  2. Experimental study on noise control of a centrifugal blower using tooth shape vane

    齒形葉片降低離心式風機噪聲的實驗研究
  3. Assessment on blower ' s noise pollution of a building roof

    某樓頂風機噪聲污染測評
  4. Reverberant room method for sound power level testing of ventilators

    空調風機噪聲聲功率級測定?混響室法
  5. Vibration isolating study on a centrifugal fan noise controlling system used in a mine wind well

    離心風機風井噪聲治理隔振研究
  6. This will be dealt with in this paper. the discrimination for noise source from qn700 indicates : the fan noise ( 625hz ), the electromagnetism noise ( 962hz ) and the burning noise are the main noise sources

    對汽車燃油空氣加熱器中具有典型代表結構的qn700型樣機的測試分析表明：風扇噪聲（ 625hz ） 、電機噪聲（ 962hz ）和燃燒噪聲是加熱器的主要噪聲源。
  7. Then analytical measurements of the noise were carried out on both of the turbines by means of modern acoustic apparatus and a conclusion has been found that the noise of the concentrated wind energy turbine is lower than the one of the ordinary wind energy turbine and the root of the trouble to cause noise chiefly originates from the turbine blade. besides, the result of analytical measurement also reveals that the power output both of the wind energy turbines will increase with the increase of the wind speed and unfortunately does the noise too. in order to lower the noise, a measures of noise reduction have been advanced that an active method is to develop a wind energy turbine run at a lower rating of wind speed while the passive method is to adopt a board drilled tiny holes, having established a sound technological basis for the development of a kind of wind energy turbine of low noise and high level in the world

    主要對濃縮風能型風力發電機在正常運轉時，噪聲產生的機理進行了理論分析研究，並與普通型風力發電機的噪聲進行了對比實驗分析；利用現代聲學測試手段對兩類機型進行測試與分析，得出濃縮風能型風力發電機產生噪聲低於普通型風力發電機和葉輪是風力發電機產生噪聲的主要部件的結論；通過對兩類機型的噪聲、輸出功率的測試，得出隨著風速的增加，兩類風力發電機的輸出功率在增加，產生的噪聲也在增加的結論；提出了進一步降低濃縮風能型風力發電機噪聲的措施，從主動降噪方面，研製低額定轉速的發電機；從被動降噪方面，採用微孔穿板的降噪結構；為研究開發一種國際上低噪聲、高水平的風力發電機打下了良好的技術基礎。
  8. According to the characteristics of the noise source, noise reduction structure was designed in outlet and inlet of cooling system respectively, it turned out spreader noise is decreased obviously

    針對這些噪聲源的特性採取相應的降噪措施，在進、排風口分別設計了消聲結構，使攤鋪機噪聲明顯降低。
  9. The problem of noise of the fan is studied with the non - linear theory, and pressure pulsation of axial flow fan ' s inside flow was measured by dynamic pressure sensor, the gas - structure coupled noise of contra - rotating axial flow fan was studied through a new perspective

    摘要用非線性動力學的理論對風機噪聲問題進行了分析，同時運用實驗手段測量了軸流風機流場內部流動的壓力脈動，從全新的角度研究了對旋風機的氣固耦合噪聲。
  10. The reason that the noise is lower with inclining tongue is : 1 ) both the radius of the tongue and the gap between the tongue and the blade are changed across the wideth ; 2 ) the phase angle between blade and the tongue is changed across the wideth, therefore the peak value of the noise do not appear at the same time, so the peak value of the noise with inclining tongue is much lower than the straight one. the influence of the expanded angle of the shell of the fan on the noise was invested experimentally, and the optimal angle was got

    傾斜蝸舌降噪的主要原因是：一是改變了從氣流入口側到風機輪盤的蝸舌間隙和蝸舌半徑；二是改變了葉輪與蝸舌非定常相互作用的相位差，使其產生噪聲也有相位差，迭加的結果進一步降低了噪聲。另外，試驗研究了不同蝸殼擴張角對風機噪聲及效率的影響規律，蝸殼擴張角選擇當否，對效率和噪聲影響較大。
  11. Application of noise control technique of movable combined mine fan

    可移動組合式礦井風機噪聲控制技術的應用
  12. Industrial fans noise limited value

    工業通風機噪聲限值
  13. Methods of noise measurement for fans, blowers compressors and roots blowers

    風機和羅茨鼓風機噪聲測量方法
  14. In order to meet the requirements of domestic speedily developing air - conditioner, and purifying industries and reducing the noise pollution of fan, referred the mass of advanced sample fans of abroad, designed and turned out the dkw series low noise centrifugal fan successfully it is an energy - saving centrifugal fan, at present, this series has the lowest noise and the least vibrating at the domestic market, it has the advanced level of 90 ' s

    Dkw系列低噪聲離心風機是我廠為適應我國日益發展的空調、凈化工業及降低風機噪聲污染，在參考國內外大量先進樣機型離心通風機，該系列風機是具有噪聲低，振動小、能耗低等特點，具有九十年代的先進水平。
  15. The regulation for the main fan noise

    風機噪聲治理
  16. At low speed the cooling fan noise is much lower than the engine noise ; whilst at high speed it always tops the leading noise sources

    在低速時風扇噪聲要比發動機噪聲低很多，而在高速時，往往會成為主要的噪聲源。
  17. This paper aimed at the low noise aerodynamic performance of automobile cooling fan, set out from the fluid dynamics and the mechanism of noise generation and radiation, mathematical model has been erected to analyze the influence of the main structural parameters on noise performance

    本文著眼于汽車冷卻風扇的低噪聲氣動性能，從汽車冷卻風扇的流體動力學理論和氣動噪聲的產生機理出發，建立數學模型，分析風扇主要結構參數對冷卻風扇噪聲性能的影響。
  18. It is concluded that the primeval design of hv ' ac system decide that the building noise environment is good or bad. as to say how to resolve the six sides problems : machine noise, machine vibration, fan noise, duct noise, draft noise and cross - talk noise

    我們認為：建築（使用hvac系統）聲環境的好壞取決于hvac系統初期的設計，也就是如何解決好機械噪聲、機械振動、風機噪聲、管路噪聲、氣流噪聲以及管路交互傳遞噪聲這六方面的問題。
  19. The paper analysed the characteristics of noise pollution in cement plant harm to human health, and emphasized the control theory and detail method of noise from ball mill and fan, fianlly put forward the control measure

    摘要文章分析了水泥廠噪聲污染的特點，闡述了噪聲對人健康的危害，重點分析了球磨機和風機噪聲的控制原理和具體方法，提出了綜合治理的措施。
  20. The noise mechanism made by the fan tongue is further studied and the clearance between the tongue and the blade is invested experimentally, it is found that the gap of tongue is the key parameter to the noise and efficiency of the fan and the optimal gap is got based on the experiment

    試驗研究了風機風舌的噪聲機理及不同風舌間隙對風機噪聲的影響規律，試驗結果表明選擇適當的風舌間隙是降低風機噪聲，提高風機效率的重要手段之一。
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