降噪材料 的英文怎麼說

中文拼音 [jiàngzàocáiliào]
降噪材料 英文
acoustic damping materials
  • 降 : 降動詞1. （投降） surrender; capitulate 2. （降伏） subdue; vanquish; tame
  • 噪 : 動詞1. （蟲或鳥叫） chirp 2. （大聲叫嚷） make noise; make an uproar; clamour
  • 材 : 名詞1 （木料） timber 2 （泛指可以直接製成成品的東西; 材料） material 3 （供寫作或參考的資料） ma...
  • 料 : 名詞1 （材料; 原料） material; stuff 2 （喂牲口用的穀物） feed; fodder 3 （料器） glassware 4 （...
  • 材料 : 1. （原料） material 2. （資料） data; material 3. （適于做某種事的人才） makings; stuff
  1. The development of railway transport, digital - control machine tools, heavy machinery, diesel oil engines and auto parts are important items in the city s manufacturing sector

    而目前國際上最先進的降低室內噪音污染提升房屋使用品質的吸音材料，也將首次在展會上亮相。
  2. The first two methods use the advanced gaas materials and devices to reduce the noise of receiving system. without increasement of the transmitted power, the system margin gains 1 db compared to the conventional project margin, the information rate can be increased 2 mbps or more

    前兩種方法通過採用先進的gaas材料和器件降低接收系統的噪聲，在發射功率不變的情況下，使系統余量比常規工程設計余量提高1db以上，信息速率可以提高2mbps以上。
  3. To discuss the mechanism is produced by sawing machine noise, to adopt new technology and use the material of insulate noise in order to reduce3 the sawing machine ' s noise and optimize the configuration ' s insulate vibration, we can find the sound sawing machine ' s configuration of reducing vibration, reducing noise and insulate vibration

    摘要對鋸切噪聲產生機理進行探討，採用新技術，利用隔聲材料對鋸切機降噪、隔振的結構進行優化設計，得出合理的減振、降噪、隔振的鋸機結構。
  4. With the speed up of railway transportation, the lightening design of vehicle seems to be more and more important. reducing the weight of vehicle can not only reduce the consumption of the raw materials and the power of traction, and increase the operation speed and improve the starting and braking performance of trains, but also has the advantageous to reduce the wheel / rail interaction forces, vibration and noise, increase the service life of the vehicle and the track, and economize the cost of transportation

    隨著鐵路運輸速度的提高，車輛的輕量化顯得越來越重要，減輕車輛自重，不僅可以減少原材料的消耗，有利於降低牽引功率，提高列車的運行速度，改善列車的啟動和制動性能，而且可以有效的減少輪軌間的動力作用，減少振動和噪音，增加車輛和線路的使用壽命，節約運輸成本。
  5. The grade composite, road performance and its mechanism are systemically studied. 1 ) the aggregate grade of ogfc is studied through the volume method base on the analysis of the aggregate grades. then the grade is verified and the relation between the grade and pore rate is studied statistically, the typical grades of ogfc are developed ; 2 ) the reasonable pore rate of ogfc is studied on the basis of the balance of mechanics and function performance ; 3 ) the mineral fiber is added to the ogfc mixes to increase asphalt content, thus the anti - water performance of ogfc mixes are improved ; 4 ) high viscous asphalt fit for the preparation of ogfc is prepared through composite modification by sbs and rubber powder ; 5 ) the mechanics mechanism of ogfc is studied in the paper, it shows : asphalt paste, as well as the coarse aggregate skeleton, is essential to the mechanics of ogfc

    在分析各國ogfc級配的基礎上，運用礦料體積法進行ogfc級配設計，用正交實驗對礦料級配進行了優化設計，運用數理統計方法分析礦料級配和孔隙率之間的關系，並回歸出礦料關鍵篩孔通過率與ogfc骨架空隙結構關系的數學方程，進而提出了ogfc的合理級配；通過對不同孔隙率典型級配混合料的性能研究，綜合力學和功能性能，得出了ogfc的合理孔隙率范圍：針對高速公路面層對ogfc力學性能方面的要求，本文從瀝青膠結材料、纖維穩定劑兩方面對ogfc的性能進行改善：通過sbs和橡膠粉復合改性的方法開發出了適合ogfc的高粘度改性瀝青，摻加聚合物纖維，提高ogfc的最佳瀝青用量，進而改善了混合料的高溫性能和抗水損害性能，優化設計出能滿足高速公路路用性能，車轍動穩定度達5000次/ mm以上，動融劈裂強度比90 ，透水系數31ml / s ，並具有防滑降噪功能的開級配瀝青磨耗層（ ogfc ）混合料。
  6. In order to alleviate the problem of railroad noise pollution, this paper studies the wheel - rail noise reducing technology by sticking high damping materials on the two sides of rail according to the characteristics of train running noises after speed increase and wheel - rail noise generating mechanism

    摘要針對鐵路噪聲污染狀況，根據提速列車運行噪聲的特點及輪軌噪聲產生的機理，研究了通過在鋼軌軌腰鑲嵌高阻尼材料從而降低輪軌噪聲的技術。
  7. For conductive fillers / piezoelectric ceramic / polymer composites, based on the piezoelectric and conductive theories, mechanical energy or sound energy can change into electric energy induced by piezoelectric ceramic ' s piezoelectric effect, and then these energy can be dissipated in form of heat energy through conductive network formed by conductive fillers in the system

    在導電填料/壓電陶瓷/聚合物復合材料體系中，根據壓電、導電原理，機械振動能（或聲能）可通過壓電陶瓷的壓電效應轉換為電能，並通過體系中導電填料形成的導電網路，將電能以熱的形式耗散，從而達到減振降噪的效果。
  8. The porous diffusion type silencer is widely used to reduce the air flow noise because of its small volume and high noise attenuating ability. the out case of the silencer plays a very important role in reducing noise. the effect of the hole ' s shape, diameter and the distance between neighboring holes as well as the matchup between the case and the sound absorbing material tube are investigated experimentally. the relation between the out - flow noise and the gas velocity distribution is carefully studied for two different kinds of matchup between the case and the sound absorbing material tube. some useful results are gotten, which may be valuable to the design of the silencer

    多孔擴散型消聲器由於其體積小、消聲性能高而廣泛應用到排氣噪聲的降低上，其外殼對消聲器的消聲性能具有重要作用.本文對此類消聲器外殼的孔型、孔徑和孔距以及外殼同消聲材料的配合方面進行了細致的實驗研究，特別對外殼與消聲材料的配合與其排放噪聲以及外部流場之間的關系進行了探討，得到了一些有用的結論，對消聲器性能的提高具有一定指導意義。
  9. It is the propose of this paper to develop a method to reduce the noise level of ma60 apu without more weighting and other infection on airplane. to accomplish this object, a new type of micro perforated absorber is used

    針對新舟60飛機apu本身的結構和環境特性，我們採用一種新興的環保型消聲材料-微穿孔板為上要吸聲結構完成降噪設計。
  10. Acoustic damping materials

    降噪材料
  11. The study proved that fem is an effective and accurate method for the laminated composites " research and designation in middle and low frequency scope

    研究結果表明對層合復合降噪材料在中低頻范圍內的應用，有限元數值方法是一個有效而準確的研究和設計途徑。
  12. As an important component in laminated composites, the foamed polymer material ( polyurethane foam, puf ) is also studied in this paper. the viscoelastic property ' s influence on absorption property is studied by fem, and the relationship between the macroscopical physical properties and the absorption property is researched by experiment

    另外對作為層合復合降噪材料重要組份之一的高聚物發泡材料（ puf ）的吸聲性能進行了探討，通過有限元方法模擬其粘彈性能對吸聲性能的影響，並實驗研究了其宏觀物理表徵與吸聲性能的關系。
  13. The result shows that average absorption coefficient and noise reduction coefficient separately equal to 0. 58 and 0. 60, and fine property of sound absorption at middle - low frequency

    結果表明材料的平均吸聲系數和降噪系數分別達0 . 58和0 . 60 ，且材料的中低頻吸聲性能優良。
  14. The results of the studies show that, when fine medium belt, proper load and velocity are selected, the transmission performance of gear with meshed medium belt is superior to invloute gear ' s ; furthermore, it can be lubricated with water, and it ' s effects are almost fine to the lubricant effects with oil. so we can realize a " green lubrication " type of gear transmission

    試驗結果表明：選擇適當的介質帶材料和一定的載荷速度條件，帶式嚙合介質齒輪的傳動性能優于漸開線齒輪，並可用水進行潤滑，幾乎達到在油潤滑條件下的效果，實現一種節能、無污染的綠色潤滑齒輪傳動；相對于漸開線齒輪，帶式嚙合介質齒輪具有顯著的減振降噪作用，動態特性優越。
  15. But when concerned with higher magneto - optical recording density, the kerr angle become smaller at shorter wavelength than at longer wavelength result from recoding and reading the memory information by shorter wavelength semiconductor laser tube. further more the signal - to - noise of recording information lowers and brings difficulty for the reading

    但在更高密度磁光記錄方面，由於信息記錄與讀出採用短波長半導體激光管，磁光記錄材料的克爾旋轉角比長波長時小，導致記錄信息的信噪比下降，給信息讀出帶來困難，為此將對材料進行改性。
  16. ( 3 ) introducing the proportional damping, the finite element formula of structural - acoustic coupled system lined with sound absorbing materials is obtained. mode - superposition technique for modal frequency response analysis of coupled structure - acoustic systems is also used to deal with the sensitivities of the eigenvalues and eigenvectors of coupled systems for the purpose of reducing cavity interior noise in theory

    討論了阻尼降噪問題，建立了有阻尼聲振耦合系統的有限元模型，採用振型疊加法，將系統位移轉換到以固有振型為基向量，進行結構壁面有吸聲材料的聲振耦合系統響應的有限元分析與靈敏度分析，推導了比例阻尼條件的靈敏度計算公式。
  17. Abstract : this article analyses the structure, material, treatme nt technology of windows motor and narrates the key points that influence its performance such as : noise, current, over - load protection, sealing, electromagnetic compatibilitry

    文摘:對雙導軌式車窗升降器電動機總成結構、材料及加工工藝作了分析，同時對影響電動機總成性能的關鍵點如：噪聲、電流、過載保護、密封性、電磁兼容性作了論述。
  18. It is effective that railroad line and structure of railway carriage are improved on and acoustical absorption and sound insulation materials are selected reasonably

    改進線路狀況和車輛結構、選用隔聲、吸聲效果良好的隔聲吸聲材料是行之有效的降噪措施。
  19. The theory of using viscoelastic damping materials to reduce vibraton and niose is illuminated and the viewpoint that viscoelastic damping materials can reduce the brake noise of motor bicycle is advanced

    同時闡明了粘彈阻尼減振降噪原理，提出增加摩擦材料的粘彈阻尼可消除電動車剎車噪聲的觀點。
  20. Last year the corporation invested 3. 64 billion yuan us 448. 83 million into a total of 26 construction projects. two 300, 000 - ton docks, for the purpose of loading and unloading minerals and raw oil, were completed ahead of schedule and put to use last june

    12家日本企業將在展場拾建一7座米高的二樓房，即用參展的高端建築材料搭建一個樣板間，並將首次使用目前國際上最先進的吸音材料，用以降低室內噪音的污染。
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