通風噪聲 的英文怎麼說

中文拼音 [tōngfēngzàoshēng]
通風噪聲 英文
ventilating cock
  • 通 : 通量詞（用於動作）
  • 風 : Ⅰ名詞1 （空氣流動） wind 2 （風氣; 風俗） practice; atmosphere; custom 3 （景象） scene; view 4 ...
  • 噪 : 動詞1. （蟲或鳥叫） chirp 2. （大聲叫嚷） make noise; make an uproar; clamour
  • 通風 : 1 （使空氣流通） ventilate; air 2 （透氣） be well ventilated 3 （透露消息） divulge information;...
  1. This paper researches on a novel method to measure three - dimensional sound intensity use for failure diagnosis of electro - hydraulic system and the fabrication of a miniature three - dimensional sound intensity probe by using two separate micro - machined pressure probes and one microphone frame

    本文研究了聲強測量技術在汽車噪聲源識別中的應用。通過使用兩個微型雙麥克風和支撐它們的框架，我們設計了一個小型的聲強探測器，用它來實現對汽車噪聲源的聲強探測。
  2. Passages reserved for connecting the engine room to the outside ( e. g., the cooling fan outlet, the exhaust outlet, the ventilation outlet, etc. ) must be designed as muffling passages, whose insertion loss should also be equivalent to the sound insulation amount of the fender structure. only in this way can the environmental noise outside the engine room live up to the standard

    為機房與外界相通而預留的通道（如冷卻風扇出口、發動機排氣出口、機房通風換氣口等）必須設計成消聲通道，其插入損失也應與圍護結構的隔聲量相當，只有這樣做才可保證機房外的環境噪聲達標。
  3. This paper try to obtain various noise - control measures applied to different situations through analyzing noise transmission characteristics of heat pump units under natural conditions of ventilation and cooling, in practice, the noise pollution of the hot pump units has been reduced obviously by effective measures

    通過分析風冷式熱泵機組的噪聲源特性，在滿足熱泵正常運行所需要的通風散熱等條件下，總結出多種應用於不同情況下的噪聲治理措施，並經實踐檢驗，降噪效果顯著。
  4. Determination of sound power levels for noise emitted by heating ventilating and air conditioning equipment - engineering method

    採暖通風與空氣調節設備噪聲聲功率級的測定工程法
  5. Standard test method for airborne sound attenuation between rooms sharing a common ceiling plenum

    共用一個天花板中通風系統的房間之間氣載噪聲衰減率的標準測試方法
  6. This paper is based on the theory of environmental science, systematology and noise control engineering. noise control system and comprehensive harness of fan room have been researched. by the investigate, and measure of fan room noise. sound production principle, acoustics characteristic and the law of attenuation propagation have been analyzed. thus, the sound field model of fan roo has been put for put forward ward

    本文以環境科學、系統科學和噪聲控制學為理論基礎，對風機房噪聲控制系統及其綜合治理進行研究，通過對風機房噪聲污染調查監測，分析其發生機理、聲學特性和傳播過程衰減規律。
  7. Fans for general purposes - methods of noise testing - airborne noise emitted by small air - moving devices - section 6 : airborne noise emitted by small air - moving devices

    普通用途風扇.噪聲試驗方法.小型空氣推動裝置發出的空氣噪聲
  8. For speech communication, noise and interference will make listener fatigued and affect intelligibility and articulation of speech. as a result, it is necessary to design corresponding device to reduce noise in wireless speech communication. this thesis focus on the basic theory of speech processing, the key technologies to reduce noise in speech and the design and implementation of corresponding noise reduce devices

    由於無線語音在傳輸過程中不可避免地會受到風、雨、雷、電的干擾;還有來自周圍環境的干擾及通信設備內部電噪聲等的干擾，使得原始的純凈語音成為被噪聲污染的帶噪語音，從而對無線語音通信的質量產生嚴重影響。
  9. We got a new model centrifugal fan by the mathematics optimum design, experiment optimum design, lots of mathematics calculation and regress calculation in the paper. the efficiency of this new fan is increased 6. 44 % and the noise is reduced 4. 78db than that of the original fan

    本文通過數學優化和試驗優化相結合的方法，並對實例經過大量的數學計算、試驗及回歸計算等得到了一種新型離心式通風機，該通風機比它的原型機（ 4 - 72no . 4a ）效率提高了6 . 44 ，比a聲級噪音降低了4 . 78db 。
  10. Presently, in the design of the ventilation and heat dispersion of the cabin, only necessary wind quantity is considered simply, while detailed mode and efficiency of the ventilation and heat dispersion are not considered too. so maybe the resource is wasted by the equipment, while noise is increased and stealth ability is decreased

    目前，在機組艙通風散熱的設計中，只是簡單地考慮了散熱所需的風量，而沒有考慮通風散熱的具體方式和效率，這不但造成了整個裝備對資源的浪費，同時還增加了機組艙的噪聲和降低了機組艙的隱身能力。
  11. 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。
  12. On the basis of analyzing the aerodynamical property and the construction of usual axial fan, the aerodynamical property and the construction of contra - rotating axial local fan are studied in the paper. moreover, author has designed a kind of contra - rotating local fan, which has the characters of low noise, high efficiency, well aerodynamical performance, optimum structure, and large power

    本文在分析了普通軸流式通風機的氣動力特徵和結構的基礎上，研究了對旋式軸流通風機的氣動力特性和結構特點，設計並製造出了一種風量大，風壓高，噪聲低，效率高，氣動性能好，體積小，結構新穎的2 30kw新型大功率對旋式軸流局部通風機樣機。
  13. The former one is a product of the pressure pulsation resulting from the fan blade periodically cutting the air, with the blade passing frequency as its base frequency and accompanied by higher harmonics. the wide - band turbulent noise is formed when the rotating fan forces the surrounding air to produce turbulent throw - outs and results in gas thickening and thinning processes

    旋轉噪聲是由於風扇的葉片周期性地切割空氣，引起空氣的壓力脈動產生的，以葉片通過頻率為基頻，並伴有高次諧波。湍流噪聲是由於風扇運動導致的周圍空氣發生湍流脫體，使空氣發生擾動，形成氣體的壓縮與稀疏過程而形成的，是一個寬頻帶噪聲。
  14. A new aerodynamic design system developed by authors for draft fan with enhanced efficiency, suppressed noise, enlarged flux and high load. the new design system features : a twist regulation for vortex control is employed in designing to lessen the secondary flow loss in the blade tip and hub ; the feasibility and high efficiency of this procedure has been verified by the tests of the prototype fan ; a new computer - aided 3d blading is used to optimize the blade ; numerical inverse checking is adopted to enhance accuracy in designing and cut down the period of the designing and production. this design system can make the optimized blade with " forward inclination ", " inclining sweep ", " bending sweep ", to minimize the various secondary flow losses, to expand the steady working range of the fan, and to suppress the aerodynamic noise source

    本文通過對一種新型高性能礦用局部通風機的設計、製造及試驗全過程的綜述，展現了新的先進設計體系在民用通風機上的成功運用，其研製特點是： （ 1 ）在葉片氣動設計中為了降低葉根及葉尖區二次流損失，採用可控渦扭向規律設計，樣機實測的高性能驗證了這種方法的可行性和高效性； （ 2 ）在設計方法中採用較精確的數值反驗算，獲取最優設計方案，大大提高設計的準確性和成功率，並縮短了設計試制周期； （ 3 ）在設計過程中發展了計算機輔助三維葉片造型新方法，可以根據設計需要簡便快捷地對葉片進行「前傾」 、 「傾掠」或「彎掠」造型，這些造型對減小各種二次流損失、擴大穩定工況范圍和控制葉輪機氣動噪聲源起到了非常好的作用。
  15. Abstract : a new aerodynamic design system developed by authors for draft fan with enhanced efficiency, suppressed noise, enlarged flux and high load. the new design system features : a twist regulation for vortex control is employed in designing to lessen the secondary flow loss in the blade tip and hub ; the feasibility and high efficiency of this procedure has been verified by the tests of the prototype fan ; a new computer - aided 3d blading is used to optimize the blade ; numerical inverse checking is adopted to enhance accuracy in designing and cut down the period of the designing and production. this design system can make the optimized blade with " forward inclination ", " inclining sweep ", " bending sweep ", to minimize the various secondary flow losses, to expand the steady working range of the fan, and to suppress the aerodynamic noise source

    文摘:本文通過對一種新型高性能礦用局部通風機的設計、製造及試驗全過程的綜述，展現了新的先進設計體系在民用通風機上的成功運用，其研製特點是： （ 1 ）在葉片氣動設計中為了降低葉根及葉尖區二次流損失，採用可控渦扭向規律設計，樣機實測的高性能驗證了這種方法的可行性和高效性； （ 2 ）在設計方法中採用較精確的數值反驗算，獲取最優設計方案，大大提高設計的準確性和成功率，並縮短了設計試制周期； （ 3 ）在設計過程中發展了計算機輔助三維葉片造型新方法，可以根據設計需要簡便快捷地對葉片進行「前傾」 、 「傾掠」或「彎掠」造型，這些造型對減小各種二次流損失、擴大穩定工況范圍和控制葉輪機氣動噪聲源起到了非常好的作用。
  16. A study on traffic noise pollution and its countermeasure in wuhan moshan mount scenic area

    武漢磨山風景區交通噪聲污染及對策研究
  17. Industrial fans noise limited value

    工業通風機噪聲限值
  18. Combined with the self - designed project of shanghai ground transportation center - wind tunnel center, we bring out some methods to study and control aero - acoustic noise accompanying with wind tunnel experiments, these conclude some successful experiences of foreign countries and we also developed some self - designed ways to supervise our experiments, and especially we point out some difficulties during the experiments

    結合上海地面交通工具風洞中心的自主設計項目，提出了風洞設計中氣動聲學噪聲的研究和控制路線，既包括了國外一些成功的經驗，也提到了自行設計試驗的方案的思路，以及自主開發所需要涉及的一些難點。
  19. 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。
  20. When the cooling fan is adopted, the forced air circulation of the low - noise fan will reduce the operating temperature of the winding so as to increase the output capacity up to 150 % of the rating capacity

    當採用風冷系統時，低噪聲風機通過強迫空氣循環，可降低線圈的運行溫度，即可增大容量輸出至額定的150 %左右。
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