波動聲學 的英文怎麼說

中文拼音 [bōdòngshēngxué]
波動聲學 英文
wave acoustics
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 學 : Ⅰ動詞1 （學習） study; learn 2 （模仿） imitate; mimic Ⅱ名詞1 （學問） learning; knowledge 2 （學...
  • 波動 : 1 （不穩定） undulate; fluctuate; unsettle; surge; rise and fall 2 [物理學] wave （motion）; wave...
  1. Mechanics course mainly includes the description of movement of objects, the instantaneous effect of strength, spatial build - up effect of strength, temporal build - up effect of strength, nonindividual body mechanics, mechanical wave and sound, relativity, inalterability and covariability and mechanics foundation of the theory of relativity

    力學主要內容包括物體運動的描述，力的瞬時效應，力的空間累積效應，力的時間累積效應，連續體力學，機械波和聲，相對性、不變性與協變性和相對論力學基礎等。
  2. After reviewing the history and recent developments of the research on thermoacoustics, and introducing the classical thermoacoustic theory, we carry out the following investigations : 1 ) thermoacoustically driven pulse tube refrigerator ( tadptr ) experiments have been done on the self - built pulse tube refrigerator driven by standing wave thermoacoustic prime mover system

    本文首先回顧了熱聲機械的歷史及現狀，詳細介紹了熱聲學理論基礎，重點研究了以下若干問題： 1駐波型熱聲驅動器驅動脈管製冷機在自行搭建的駐波型熱聲驅動脈管製冷機實驗裝置上進行了實驗研究。
  3. 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。
  4. 2. a method combining some of the composite space structural simulation, wavelet analysis, fuzzy mathematical, genetic algorithm, artificial intelligence, expert system, vibration diagnosis, acoustic sounding, supersonic flaw detection, radioscopy, infra - red detection and so on to diagnose the composite structure damage is discussed

    本文對把復合材料大跨建築結構模擬、小波技術、模糊數學、遺傳演算法、人工智慧、專家知識、振動診斷、聲發射技術、超聲波檢測、射線探傷、激光全息檢測、紅外線檢測等方法中的幾種融合在一起對復合材料大跨建築結構進行損傷診斷的方法進行了探討。
  5. Based on seismic wave method, borehole acoustic method and indoor rock mechanics test, the dynamic and static parameters of the foundation rock for the toe slab of the concrete face rockfill dam for shuibuya hydropower station are tested, and then the relationship among the rock quality, dynamic parameter and static parameter are established with the parameters obtained from the test, furthermore, the classification and the quality evaluation are made as well

    摘要採用地震波法、鉆孔聲波法以及室內巖石力學試驗法，對水布埡水電站面板壩趾板建基巖體進行了動、靜參數測試，並根據所獲的參數建立了巖體質量、巖體動力學和靜力學參數三者之間的相關關系，對工程巖體進行了質量分級和質量評價。
  6. In this paper, high - order accurate weighted essentially non - oscillatory ( weno ) schemes are investigated and their applications in hyperbolic conservation laws are discussed. based on this, a new weno difference scheme which based on dispersion - relation - preserving relation is developed, and representative test cases with this scheme for computational aeroacoustics ( caa ) problems has been implemented and compared in order to test capability of wave capturing ; in addition, weno schemes generally do not converge at high order in the presence of contact discontinuity of euler equations, so a conservative front tracking technique coupling weno schemes and level set method to simulate the translating density profile is presented here, and numerical simulation with this technique for representative test case has been implemented and results show the desired accuracy

    本文研究了高階精度加權基本無振蕩（ weno ）格式及其在雙曲守恆律方程中的應用，在此基礎上作了兩個方面的工作：一是針對高頻聲波問題構造出一種基於保色散關系（ drp ）的weno有限差分格式，並對計算氣動聲學（ caa ）問題的代表性算例進行了大量數值實驗，比較了該格式捕捉波數的能力；另外，針對高階weno格式在處理euler方程的接觸間斷時精度有所降低的問題，研究了利用界面追蹤技術levelset方法和高階激波捕捉weno格式相結合的一種守恆追蹤方法，並且給出有代表性的密度滑移面問題的算例，得到一致高階精度的數值模擬結果。
  7. Backed up by the soplat theory based on particle kinematics, the second chapter of this paper presents with analysis and simulation of several single observer passive measurement models, which uses such relative movement parameters as bearings changing rates and centrifugal acceleration information on the basis of bearings measurements. in the third chapter, the observability of location respectively using bearings and its changing rates information and centrifugal acceleration information is analyzed, and its observable condition is got. the fourth chapter puts forward the modified covariance extended kalman filtering ( mvekf ) against the defect of traditional extended kalman filtering ( ekf ), whose performance is simultaneously compared in the chapter with the performance of ususal tracking algorithm such as ekf, mgekf, iekf by computer simulation

    在近年來提出的基於質點運動學原理的單站無源定位理論基礎上，本文第二章提出了幾種在角度測量的基礎上增加角度變化率及相對運動的離心加速度等運動學參數的單站無源測量模型，並對它們進行了分析和模擬；第三章分別對利用角度及其變化率信息定位和利用離心加速度信息定位的可觀測性進行分析並得到了相應的可觀測條件；第四章針對傳統擴展卡爾曼（ ekf ）方法的缺點，提出了一種修正協方差的擴展卡爾曼濾波（ mvefk ）方法，並將其和ekf 、 mgekf 、 iekf等常用的單站無源定位濾波方法進行了性能模擬比較；第五章通過引入雷達機動目標跟蹤方法和模型，提出了利用角度及其變化率對機動輻射源跟蹤的多級噪聲自適應方法和imm方法；第六章主要對角度變化率和離心加速度參數的獲取技術進行了研究，提出了幾種高精度測量脈沖序列多普勒頻率變化率的方法。
  8. At present, auralization software and research fruit based on geometrical acoustics ca n ' t solve problems above. in this dissertation, the finite element method ( fem ) and adaptive finite element method ( afem ) to auralization in small enclosures are presented. relative problems are studied and some effective approaches for the problems " settlements are given

    本文將波動聲學為理論基礎的有限元法（ finiteelementmethod ，簡稱fem ）及自適應有限元法（ adaptivefiniteelementmethod ，簡稱afem ）成功地引入到小尺度封閉空間可聽化研究中，對相關問題進行了深入研究，提出了一系列解決問題的有效方法。
  9. Although a dual - mode scramjet ' s configuration is simple and mainly consists of inlet, combustor and wake nozzle, its working process is complicated, especially in the combustor, involving a lot of subjects, including hypersonic aerodynamics, combustion chemistry, etc. the inner flow of a combustor is three - dimensional and complicated, including the interaction of shock wave, deflagration, vortex and boundary layer, and so on

    它涉及到高超聲速空氣動力學、燃燒化學、擴散傳質等多門學科；其內部的實際流動是復雜的三維流動過程，充滿著激波、膨脹波、燃燒波、各種渦系、附面層及其相互之間的干擾，因此，燃燒室問題是整個發動機研究的關鍵所在。
  10. The model from the input to the output of the piezoelectric traveling wave ultrasonic motor is established by synthetically using lagrange - maxwell equation, hertz elastic contact theory and coulomb friction theory, along with considering electromechanical coupling, influence of the interface force between the stator and rotor of the motor on the amplitude of the traveling wave inside the stator and dynamic contact friction friction force

    利用拉格朗日?麥克斯韋方程以及赫茲彈性接觸理論，庫侖摩擦理論，考慮機電耦合效應，定、轉子間界面力對彎曲行波的影響及其動態接觸摩擦力，建立了壓電行波超聲波馬達從輸入到輸出的機電耦聯系統的數學模型。
  11. After a detailed review on the historical developments of the research on thermoacoustics, as well as the latest advances in this field, prospective applications, and a survey of theoretical fundamentals, the present work focuses on the following sections : 1 ) standing wave thermoacoustic prime mover an experimental setup of standing wave thermoacoustic prime mover has been built up with brass matrix as the thermoacoustic stack

    本文首先回顧了熱聲熱機的發展歷史及最新成就，在詳細介紹熱聲學理論基礎以及熱聲機械設計原則之後，重點研究了以下若干問題： 1駐波型熱聲驅動器建立了我國第一臺實用駐波型熱聲驅動器試驗臺，並進行了實驗研究。
  12. The seismic modeling algorithm includes in two key steps in which one is for calculating effective elastic parameters in a fractured and caved media by using elastic wave equation, the other is for wave extrapolating by using acoustic one - way wave equation based on an equivalent geology model consisting of those effective parameters

    地震正演方法包含兩個關鍵步驟，一是利用彈性波動方程計算含縫洞介質的有效彈性參數，另一步驟是根據有效彈性參數構成的等效地質模型，用單程聲學波動方程進行波場延拓。
  13. The editor of the christian science monitor says she is emotionally fragile right now and her family wants to be sure she is ready for the trip

    一位《基督教科學箴言報》編輯聲稱目前她的情緒極易波動，她的家人想要確定她是否已經準備好要踏上回國的旅程。
  14. To study the acoustic unsteady combustion of srm, built the acoustic model of chamber. deduced the little amplitude sound wave 3d equation, used the finite volume discrete method to simulate. got the vibration model of three kinds of chamber

    為研究固體火箭發動機聲不穩定燃燒特性，建立了燃燒室內聲學特性分析的物理數學模型，推導了小振幅聲波三維波動方程，採用有限體積離散方法進行模擬，得到圓柱型、四片翼柱彤和五片翼柱型藥柱三種燃燒室形狀聲學振動基本模態
  15. From the point of kinematics and dynamics, the author analyses the propagation rules of stress waves in concrete, namely time - space relations, wave amplitude attenuation, dispersion effect and characteristics of transmission of reflected waves and acoustic waves. combining with engineering practices, the author also concluded the main points of low strain detection of integrity of longdiameter underwater cast - in - situ piles, and pointed out that comprehensive and relational utilization of reflected waves method and acoustic wave transmission method can accurately evaluated the integrity of pile shaft and then improve the reliability of detection. 6figs., 3refs

    從運動學和動力學角度，分析應力波在混凝土中的傳播規律：時空關系、波幅衰減、頻散作用以及反射波與聲波透射的特點，結合工程實踐，總結大直徑水下灌注樁低應變檢測的工作要點，指出綜合、合理運用反射波法與聲波透射法，可以較準確地評價樁身完整性，提高檢測結果的可靠性.圖6 ，參3
  16. The result of the experiment indicated that the capability of adsorption decrease with ultrasound intensity, while the rate of the extraction and adsorptin increase. the model resulst also showed that the theoretical value of the homogeneous model considering intrapartical diffusion and outside - surface diffusion with freundlich phase equilibrium equation are agfeeable with the experimental value

    在吸附實驗中，測定了不同強度超聲場下梔子甙與1300樹脂上吸附平衡曲線、靜態吸附動力學曲線、動態穿透曲線。實驗結果表明，吸附容量隨著超聲波強度的增加而減少，而浸取、吸附速率隨著超聲波強度的增加而增大。
  17. The key problems for auralization of small enclosed - room are pointed out, that are, how to realize three modeling tasks of auralization based on wave acoustics, how to solve the consuming of big capability memory and long calculating time

    指出了實現小尺度封閉空間可聽化的關鍵問題是如何基於波動聲學實現可聽化的三個建模過程、並解決大容量內存消耗以及較長計算時間。
  18. After a detailed review on the developments of the research on thermoacoustics, as well as the latest advancements in this field, prospective applications, and a survey of theoretical fundamentals, the author ' s work focuses on the following sections : according to predecessors " explanations, as well as personal understanding on thermoacoustic effects, a qualitative explanation for the operating mechanism of thermoacoustic engines from thermodynamic viewpoint is presented

    因此行波熱聲發動機也就成為這一領域的研究熱點。本文簡要回顧了熱聲學的歷史和研究現狀，並從不同角度對熱聲機械的基本原理進行了論述。根據前人的觀點並結合自己對熱聲熱機的理解，給出了熱聲熱機工作機理的熱力學解釋。
  19. Along with increase of pressure, the parameters such as velocity, amplitude, main frequency and quality factor of seismic wave change big gradually, while change very weakly with the change of temperature. through testing research for artificial crack and pore model, we conclude that crack density, azimuth, opening and the change of pore have obvious influences on speed, amplitude, attenuation ( or quality factor ) and main frequency of seismic wave etc. but, seismic wave dynamic characteristics are more evident than its kinematical characteristics for the change of crack and pore parameters. therefore, it offers reliable experiment foundation for detecting crack and pore by seismic wave kinematical characteristics ( such as amplitude, attenuation and main frequency etc. )

    通過對人工裂縫和孔洞模型的超聲波實驗研究，可以認為：裂縫密度、方位、張開度和孔洞密度的變化對縱橫波的速度、振幅、衰減（或品質因子q ）和主頻率等參數均有明顯的影響，但裂隙參數的變化對地震波動力學特徵參數（振幅、衰減、主頻率等）的影響遠遠大於對運動學特徵參數（速度等）的影響，這為利用地震波的振幅、衰減和主頻率等屬性參數進行裂縫和孔洞特徵的檢測提供了可靠的實驗基礎。
  20. In recent ten years, on the basis of development of high - speed digital signal processor and microprocessor, on the basis of research for new - style probe material and technology, on the basis of research for acoustic channel configuration and flow mechanic, the ultrasonic flow measurement technology has obtained a great advancement, showing its strong technical advantage and becoming an important flow measurement technology

    近10年來，基於高速數字信號的處理技術與微處理器技術的進步，基於新型探頭材料與工藝的研究，基於聲道配置及流體動力學的研究，超聲波流量測量技術取得了長足的進步，顯示了它強勁的技術優勢，成為一種重要的流量測量技術。
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