表面噪聲 的英文怎麼說

中文拼音 [biǎomiànzàoshēng]
表面噪聲 英文
surface noise
  • 表 : Ⅰ名詞1 （外面;外表） outside; surface; external 2 （中表親戚） the relationship between the child...
  • 面 : Ⅰ名詞1 （頭的前部; 臉） face 2 （物體的表面） surface; top 3 （外露的一層或正面） outside; the ri...
  • 噪 : 動詞1. （蟲或鳥叫） chirp 2. （大聲叫嚷） make noise; make an uproar; clamour
  • 表面 : surface; superficies; boundary; face; rind; sheet; skin; outside; appearance
  1. 3. researching on the edge detection method of surface image. after using the edge detection operator for the preliminary abstracting, a series of extending work, such as grey bivalence 、 thinning 、 noise reduction and compagination have been done

    3 .對帶鋼表面圖像的邊緣檢測方法進行了研究及實現，採用邊緣檢測運算元對邊緣初步提取，進行了二值化、細化、去噪聲、連接等一系列后續處理工作，並且較好的判斷了邊緣是否良好的情況。
  2. Series of guowei dry - method composite machines as new product are explored with our many years ' experience, the requirement of the users. the first metal of this machine is adopted with : photo - ecectricity auto. tracking " correcting deviation equipment, magnetic powder tension control. pneumatic back pressure shifting blade, oven temperature controlled qutomatically, big roll with oil heating, coating composite pneumatic control as well as double frequency governor etc. it will make the machine with fast speed, lower voice, low polluted by air, shout consumptionfor energy, stable working etc. especially suitable for al - foil with smooth surface and no enough firming, glass paper, polyester ect. the composite material with hard strength, fireproof, anti - ventilation, anti - fatty, frozen, dudrable steam etc character. it is widely used in food, pharmacy, as well as daily articles to package

    「國偉」 、系列乾式復合機，是我廠根據多年的復合機製造經驗及結合客戶需求，開發的新產品，該機第一基材採用了「光電自動跟蹤」糾偏放卷裝置，磁粉張力控制、氣動背壓移動式刮刀、烘箱溫度分段自動控制、大輥筒導熱油加熱、上膠復合氣動控制及雙變頻調速技術，使該機具有復合速度快、噪聲低、空氣污染小、能耗低、運行平穩等特點，適宜於表面光滑的鋁箔玻璃紙聚酰胺等與聚乙烯、聚丙烯等薄膜的復合，復合薄膜具有強度高、防水、防透氣、防油脂、可冷凍、蒸煮等優點，廣泛應用冷凍食品、乾燥食品、醫藥品及日用品的包裝。
  3. Surface transverse wave has the 1. 6 high frequency than rayleigh type surface acoustic wave ( using the same technology the frequency of devices of stw has about 1. 6 high frequency than rayleigh type surface acoustic wave ). the paper introduces the theory, design parament, technology and result expeiment of surface acoustic wave ( includes rayleigh surface acoustic wave and surface transverse wave, simple stw ) with low insertion loss, high q and researches the high frequency, low phase noise oscillator with 1ghz stw resonator as frequency element. and describes measurement method and finally experimantal result of the low phase noise surface acoustic wave oscillator

    本文研究了以低損耗、高q值聲表面波（其中包括聲表面瑞利波- - rayleighsurfaceacousticwave ，和聲表面橫波等）諧振器的工作原理、設計參數、製作工藝及其實驗結果，並且研究了以1ghzstw諧振器為頻控元件的高頻率、低相位噪聲聲表面波振蕩器，以及低相位噪聲聲表面波振蕩器的測試方法和最終的測試結果。
  4. We also proposed a reformed surface speed method based on the problems of surface speed method in engineering application. this method can make sure the structure radiant sound status in total noise and the detail phonate part quickly and correctly

    根據表面速度法在工程應用中存在的問題提出了頻帶聲壓級差值法，該方法能快速準確地確定結構聲在總噪聲中的地位和結構的具體發聲部位。
  5. In the present dissertation, friction - induced noises emitted by a flat specimen rubbing against another flat specimen or a ball specimen under reciprocating sliding are studied. the detailed observation of the scars is conducted by means of a scanning electrical microscope ( sem ), laser scanning microscope ( lsm ), optical microscope and profilometer. the dynamic state variables are analyzed in detail using the discrete wavelet transform

    使用電子掃描顯微鏡（ sem ） 、激光掃描顯微鏡（ lsm ） 、光學顯微鏡和表面輪廓測量儀等設備對摩擦噪聲發生的區域進行了詳細的觀察和分析，運用小波變換技術對摩擦噪聲狀態下的動力學變量進行了深層次的研究，應用matlab simulink語言對摩擦系統進行了振動動力學模擬，系統地研究了摩擦噪聲的形成機理。
  6. A study on the surface noise source identification of a diesel engine

    柴油機表面噪聲源識別技術研究
  7. Abstract : in the paper, based on the problem that strong reactive background noise can bring about a big measurement error when sound power is measured in a narrow room, such as power room in a diesel locomotive, it is analyzed theoretically that sound power is measured and carried out by using sound intensity probe hood, and sound power of diesel engine surface noise is measured in a power room

    文摘:在狹小空間如內燃機車動力室的條件下，測量柴油機表面噪聲聲功率時，動力室內抗性背景聲很強引起較大的測量誤差，從理論上分析了採用聲強探頭罩進行聲功率測量的可行性，並進行了內燃機車柴油機表面噪聲的聲功率測量。
  8. Because of stock noise ' s existence, the positive research is very significant. after analyzing noise phenomena, noise degree and market efficiency, i have arrived at a conclusion that the fundamental efficiency and function of china ' s securities market is low

    隨后，在我國股市噪聲的實證分析中，筆者主要從噪聲表象、狀態和股市效率等三個方面對我國股市加以研究，證實了：我國股市的噪聲狀況已非常嚴重，整個市場效率低下。
  9. This thesis was divided into eight chapters, and the main results and innovations obtained here can be summarized as follows : ( 1 ) the physics model of tsrs in frequency conversion crystals has been built up firstly. based on quantum - mechanical viewpoints and the following physical processes and parameters : the two - photo interaction of light with matter, paraxial diffraction of stokes, langevin noise sources, reflection at the faces and the edges of crystals, gain coefficient, beam aperture, pulse width and fluence of 3, the physics model of tsrs in kdp and kdp crystals acting as high - fluence frequency convector and the paraxial operator maxwell - bloch - langevin equations have been built up

    全文共分八章，取得的主要成果及創新點如下： （ 1 ）首次建立了諧波轉換晶體的tsrs物理模型本文根據量子力學原理，在考慮如下物理過程和參量的基礎上：光與物質的雙光子相互作用； stokes光的傍軸衍射； langevin （郎茲萬）噪聲源；晶體表面反射和端面反射；增益系數、光束口徑、脈寬和三倍頻光能量密度，推導出高通量激光在kdp和kd ~ * p諧波轉換晶體中的tsrs物理模型和空間上的近軸算符maxwell - bloch - langevin方程組。
  10. Measurement of airborne noise emitted by machines ; enveloping surface method ; form for measurement report, comminuting machines

    機器空氣噪聲的測量.包絡面法.測量報告表.粉碎機
  11. Secondly, by means of the measurement of the vibration and associated noise, the area in the presence of the friction - induced noise is determined accurately. as a result, a comparative analysis on the topography of the scar surfaces with and without noise is performed in detail

    其次，利用動力學和聲學測量技術確定了摩擦噪聲所發生的區域，在此基礎上對磨痕上表面形貌進行了詳細的對比分析，發現有噪聲區域的形貌明顯不同於沒有噪聲區域的形貌。
  12. It is observed that the topography of the area with noise on a scar surface is characterized by larger surface roughness, plowing grooves, pits or adhesive joined asperities. while it is found that the topography of the scar after noise disappearance is characterized by a clear polished scar surface and a smaller surface roughness

    有噪聲磨痕形貌的特徵是表面粗糙度比較大、存在不規則的犁溝、麻坑或粘著微凸體；而噪聲消失后的磨痕形貌特徵是表面粗糙度比較小、有微拋光作用發生。
  13. The justification of(13. 2-2)as a representation of spontaneous emission noise is provided by the discussion preceding(13. 1-7).

    根據上面對式（131-7）的討論，就可以將公式（132-2）看作是自發輻射噪聲的表達式。
  14. The second is that for a complicated system, for example, with many loops as well as many controllers, it is very difficult to give the direct relation between the parameters of processes and that of controllers

    這主要有以下幾方面原因：一是在工業環境下，對被控過程難以進行精確的數學描述。由於工業噪聲所表現出來的多樣性，最小二乘類等參數辨識方法的應用受到很大的限制。
  15. Abstract : by drilling holes on the surface, adding damping and isolating vibration to the roller, the vibration and noise radiation are not onl y reduced, but vibration energy of transmission to the surrounding objects is al s o restrained

    文摘:通過對輥筒進行表面處理、附加阻尼裝置和採用隔振措施，不但減少了輥筒的振動和噪聲而且抑制了輥筒振動能量向支架、地基傳遞，避免二次結構聲。
  16. In light of the generation mechanism, the surface radiation noise can be further divided into the combustion noise and the mechanical noise

    按照產生的機理，柴油機表面輻射噪聲又可以分為燃燒噪聲和機械噪聲。
  17. ( 5 ) the near field and radiation field of flow noise are analyzed, and the noise reducing features of riblets are deduced

    （ 5 ）在分析流噪聲的近、遠場特性的基礎上，進一步研究條紋表面的降噪特性。
  18. In order to improve the quality of the voltage signals, this paper has adopted the scheme of three phases and six organs in signal - generator part, which can eliminate the errors caused by the assembly warp and the zero shift of organs. this paper also has analyzed the distribution and varying rules of the magnetic field in the signal - generator part, then based on the conclusion of the analysis improved the structure of signal - generator, which could completely eliminate the noise signal caused by the roughness of the face on the magnetic steel ring. the improvement not only met the requirement of this study, but established the theory foundation for the super - high precision magnetic encoder in future research

    因此，為提高原始電壓信號的質量，本文採用三相六元件的信號發生方案，通過差分處理濾除了由於裝配偏差和零點漂移帶來的信號誤差;本文對編碼器信號發生結構進行了磁場分析，依據磁場分析的結論對編碼器常用的信號發生結構進行了改進，改進后的結構利用積分原理在理論上能夠完全消除信號中由磁鋼環表面粗糙度引起的信號噪聲，進一步提高了信號質量，此結構不僅滿足了本課題的需要，而且為今後研製超高精度的磁電式編碼器奠定了理論基礎。
  19. The control over the surface radiation noise ( combustion noise and mechanic noise ) is restricted by factors like the engine performance. technically such a control is quite difficult to manage and the noise reduction effect is not so encouraging

    發動機表面輻射噪聲（燃燒噪聲和機械噪聲）的控制要受到發動機性能方面的種種限制，從技術角度講難度很大，且降噪量有限。
  20. When the propeller operates in the spatially non - uniform velocity field behind the ship, the unsteady cavitation on the blades often causes the vibration of ship structure, the propeller noise and the cavitation erosion on the blade

    在船尾非均勻流場中工作的螺旋槳，常常由於槳葉上產生了非定常空泡，導致船尾振動和螺旋槳噪聲，致使槳葉表面出現空泡剝蝕。
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