超聲常數 的英文怎麼說

中文拼音 [chāoshēngchángshǔ]
超聲常數 英文
ultrasonic grating constant
  • 超 : Ⅰ動詞1 （越過; 高出） exceed; surpass; overtake 2 （在某個范圍以外; 不受限制） transcend; go beyo...
  • 數 : 數副詞（屢次） frequently; repeatedly
  1. Results echocardiography displayed that inner - tunnel unobstructed, blood supply of coronary artery improved, eject fraction increased and thickness of endocardium returned to normal

    結果患者術后多次行超聲心動圖檢查顯示內隧道通暢，冠狀動脈供血改善明顯，心臟射血分數增加，心內膜厚度恢復正常。
  2. Relaxor ferroelectric single crystals, such as pb ( mg1 / 3nb2 / 3 ) - pbtio3 ( abbreviated as pmnt ) or pb ( zn1 / 3nb2 / 3 ) - pbtio3 ( abbreviated as pznt ), have been reported to exhibit an extremely large piezoelectric constant and excellent electrostrictive properties. such excellent performance makes it fully substitute the traditional piezoelectric ceramics and points to a revolution in ultrasonic transducers, actuators and micro - positioners, making relaxor - based piezocrystals the most promising materials for a broad range of advanced applications. however, it is difficult to grow the high quality single crystals because of the lack of valid thermodynamic data

    新型弛豫鐵電單晶鈮鎂酸鉛（簡稱pmnt ）或鈮鋅酸鉛（簡稱pznt ）是一類新興的功能材料，其在準同型相界附近具有優于傳統壓電陶瓷的較高的壓電常數和電致伸縮系數，可完全代替傳統的壓電陶瓷作為超聲換能器、致動器、微位移器等，使其成為鐵電領域的研究熱點，但如何生長出滿足應用要求的單晶材料卻一直是一個困擾的問題。
  3. The change of elastic constant of steel 20 in low - cycle fatigue procedure measured by ultrasonic

    用超聲波法測試20鋼低周疲勞過程中彈性常數的變化
  4. The objective of the paper is to get nano sisn ^ co composite powder of high quality by electroless plating at normal temperature. the rules were researched that the composition of electroless plating solution and reaction condition had an influence on the reaction of electroless plating of nano - si3n4 with ultrasonic wave. the best composition of electroless plating solution was obtained

    本文以常溫化學鍍法制備高質量的納米氮化硅?鈷磷復合粉末為目標，研究鍍液組分及其工藝參數對納米氮化硅超聲波化學鍍鈷的影響規律，得到了納米氮化硅超聲波化學鍍的優化配方，制得了鍍層均勻，分散性好的納米復合粉末。
  5. Determination of elastic constants of cylindrical solidsusing backscattering amplitude spectrum

    用超聲背向散射譜定征柱狀固體的彈性常數
  6. In the process of building and using the mass concrete structures, because of the effect of out - side condition and themselves, some faults will form in the structure, these faults will effect the bearing capability and endurance using nondestructive testing method to test the concrete ' s quality and diagnose its healthy, which has the significant sense in assessing the safety stability and research of the administering diseases this dissertation mostly researched the testing methods in the mass concrete structure, discussed the principles, methods, features, sphere of application of the ultrasonic testing in the mass concrete structure with faults, used dynamic fem to simulate the testing process, discussed when the concrete structure with cracks is under the effect of the pulse, how the elastic waves propagate and what are their changing feature, researched the principles of the first - arriving waves " phase when the cracks " depths are not same, obtained the relation between the inversion point and the cracks " depth, which has the direction sense in the application of projects, the second part of this dissertation is ct, which used the ultrasonic wave running through the tested - substance to get arriving - time of the ultrasonic wave, then inverse the image this dissertation drawed one ct program which can well present the different little cells " ultrasonic wave velocity profiles of the substance, thereby to diagnose the quality of the part of the tested - substance, ct has the better using foreground.

    在混凝土結構的施工及使用過程中，由於受其自身及外界各種因素的影響，常常會產生一些缺陷，對結構物的承載能力和耐久性造成嚴重影響，採用無損檢測技術進行質量檢測和健康診斷，這對混凝土結構開展安全、穩定性評估以及病害隱患治理研究具有重要意義。本論文主要針對大體積混凝土結構缺陷的檢測方法展開研究工作，重點討論了超聲波法檢測混凝土結構裂縫的基本原理和方法及其特點、適用范圍，運用動力有限元數值模擬其檢測過程，探討了有裂縫缺陷的混凝土結構在脈沖荷載作用下彈性波的傳播及其變化特徵，研究了不同裂縫深度下首波相位變化規律，得出了反轉臨界點與裂縫深度之間的關系，這對實際工程應用具有指導意義。聲波ct是一種新的無損檢測技術，它是利用聲波穿透被檢測體獲取聲波接收時間，來進行計算機反演成像的技術。
  7. The theory and method in detecting quality defect of concrete filled steel tube arch bridge by ultrasonic wave are summarized, and the parameter character and waveform character of ultrasonic wave through concrete filled tube specimen with regular defects are studied in detail

    摘要綜述了超聲法檢測鋼管混凝土拱橋質量缺陷的理論和方法，重點研究超聲波通過鋼管混凝土試件常規缺陷狀況下的參數特徵和波形特徵。
  8. The initialization method to achieve different equalizer delay local minimum is proposed for btea and se. comparison study using several uwac with different zero locations is made to demonstrate the equivalent of different initialization method for least mean square ( lms ) algorithm, btea, se and cma

    盡管常數模盲均衡演算法的初始化仍然是一個公認的未能解決的問題，但本文通過幾條不同零點位置的水聲通道，對比研究了自適應最小均方誤差演算法、倒三譜演算法、超指數演算法和常數模演算法的不同權向量初始化的等效性。
  9. The main results of this paper are as fellows f 1 ) illtroducing the ultrasonic technology to the rigid measurement, successful1y exploits the practical small intellectualized ultrasonic device of measuring rigidity by applying mechanical technology, electronic technology and computer science 2 ) reading clearcf displaying more various, applying more information, being easiest to accept by user because of adopting liquid crystal display ( lcd ) 3 ) theorizing the mathematical model between the signal of frequency and the rigid value on the device, possessing very importan practical significance 4 ) optimizing the every parts of the device, achieving the goals of lower wastage of energy, smaller, lighter and inexpensive 5 ) taking the measure to reduce the wastage of energy and adopting reasonable management in power supply for the device, making the device skimp more energy, prolonging the life - span of battery 6 ) utilizing the interface of rs - 232, discussing the communication between the ultrasonic device of measuring rigidity and computef, and also forecasting the foreground of advanced exploitation by user

    本文工作的主要成果是： 1 ）將超聲波技術引入零件表面硬度的檢測當中。應用機、電、計算機技術，研製成功較為實用的小型智能超聲波硬度檢測儀2 ）採用lcd （ liquidcrystaldisplay ）液晶顯示，使讀數更清晰、顯示多樣化、信息量多、易於為用戶接受3 ）在理論上建立了該系統的頻率信號與硬度值的數學模型，具有非常重要的實踐意義4 ）對各元器件進行優選，達到低能耗、體積小、重量輕、價格便宜等目的5 ）採取措施降低整個系統的能耗並對系統的供電進行了合理的管理，使其進一步達到低能耗，延長了電池的使用壽命。 6 ）利用rs - 232標準介面，討論了該超聲波智能硬度測量儀與系統機進行通訊以及用戶進行二次開發的前景
  10. Different vocal behavior models were given from sound spectrum analysis for different songs. based on rule sonagram, quantitative analysis and qualitative analysis, difference comparative analysis in and between individuals for different songs were developed, and obtained the sresuls were as follows : ( 1 ) acoustic properties of male songs were that there were less syllables in every single calling song, it was usually more t

    通過對不同鳴聲的聲譜分析，給出了不同鳴聲的聲行為模式，並在常規聲圖的基礎上，對不同鳴聲進行了定性與定量分析、個體內差異比較分析以及個體間差異比較分析，得出結果如下： （ 1 ）雄性的鳴聲特性是每個單次叫聲中含有的音節數較少，一般不超過4個音節；而雌性的鳴聲特博士學位論文摘要東北農業大學仿毀刨會次叫聲？
  11. First, we introduce the development of this research field, and review the relative theories and basis on ultrasonic guided waves and development of transducer. subsequently, we depict in detail the prosess of the development of guided - waves transducer, based on the particularity of object to be detected - pip eline and some relative manufacture techniques of transducer. and we have made 24 guided - waves transducers and a mechanical device with which we can mount transducers on a pipe

    首先，本文對國內外本課題研究領域的進展作了綜述，並簡要介紹了與超聲導波技術和探頭研製相關的理論基礎；其次，根據檢測對象? ?管道的特殊性，結合常規探頭的製造技術，詳細介紹了超聲導波探頭的研製過程，製作了24個超聲導波探頭和一個用於把探頭在管道上固定的機械裝置，並且對探頭的一些性能參數進行了數值模擬。
  12. Based on signal from carbon fiber composite defects such as lamination, hole, looseners in ultrasonic testing, this paper performs wavelet packet transform on the ultrasonic signals to extract statistics of approximation coefficients and detail coefficients that contain a great part of signal energy as sample - features

    摘要本文以碳纖維復合材料常見缺陷分層、孔隙、疏鬆的超聲波檢測缺陷信號為研究對象，對超聲波檢測信號進行小波包變換，提取包含信號絕大部分能量的近似系數波形特徵及細節系數的統計量作為樣本的特徵值。
  13. By solving the christoffel equation, the relationship between velocity and angles is obtained, and the ultrasonic inverse velocity curve is illustrated. the dixon equations of ao diffraction on the xoz and yoz planes in ln crystal have been applied to obtain the geometric relationships of acousto - optic interaction. therefore, the beam steering theory is proved to be a possible way to do the optimum design of ln anisotropic acousto - optic deflector. the detailed parameter data and the figures on the xoz and yoz planes with the angle of incidence of - 5 degree are shown up, which will contribute to the desigh of aod

    對鈮酸鋰超聲跟蹤反常聲光偏轉器進行優化設計，經研究計算得到了分別在入射角取- 5o時xoz與yoz工作平面中正負一級衍射中分別使用快切變波與慢切變波的情況下，優化設計鈮酸鋰超聲跟蹤反常聲光偏轉器的設計參數，對聲光偏轉器生產設計有實際參考意義。
  14. Ultrasonic grating constant

    超聲光柵常數
  15. Standard test method for laboratory determination of pulse velocities and ultrasonic elastic constants of rock

    實驗室測定巖石的脈沖速度和超聲波彈性常數的標準試驗方法
  16. Usually, you cannot call a procedure with more arguments than the procedure declaration specifies

    通常，調用的過程所包含的參數不能超出過程聲明指定的數目。
  17. The practicality significance, the function of clinical ecg data - information management system in scientific research, clinical medical treatment and medicine teaching, international actuality in this field are summarized firstly in this paper. then the all data - information in common use at cardiopathy was concisely described. they have the characteristic of integrated in others systems, such as electrocardiograph. this paper utilize this characteristic and development an ecg data - information management system using in virtual ecg analyzer. it will provide rich and multiform clinical information resource for individual include doc., nurse, patient, clinical department, medical treatment and health protection in all levels, so much as in business. secondly, an advanced instrument manufacture technology ? ? virtual instrument technology and virtual instrument baseon it were intrduced. the auther of the paper detailedly introduced the idea, development, progress, systemic structure, specialties of vi, compared it with traditional hardware - instrument and standed out superiorities of vi

    本文首先概述開發臨床心電圖數據信息管理系統的實用意義及其在醫學研究、臨床醫療、教學上的重要作用和目前該領域國際國內現狀，簡要描述了心血管疾病科常用的數據信息，它具有與其它系統（如心電圖記錄分析系統、超聲心動圖像系統等）集成的特點，本文即利用這一特點開發出用於虛擬式心電圖儀中的心電圖數據信息管理系統，為個人（醫生、護士、病員） 、臨床部門、各級醫療保健機構乃至商業活動提供豐富的臨床醫學信息資源。接著介紹了一種先進的儀器設計製造技術? ?虛擬儀器技術以及在此基礎上形成的虛擬式儀器，文章對虛擬儀器的概念、產生和發展、系統結構、特點做了較詳細的介紹並與傳統硬體化儀器作了對比，突出了虛擬式儀器的優越性。
  18. Through the spread time of ultrasonic signal is processed by digital correlation method, measuring the velocity of ultrasonic speedily and accurately is achieved

    利用超聲脈沖回波法在溫度箱內測定了某合金材料在20 ~ 60的彈性常數，研究了溫度對該材料彈性模量的影響。
  19. The principle of the ultrasonic method applied to measure elastic coefficient is by measuring the velocity of ultrasonic wave propagation in the solid material to obtain the elastic module, shear modulus and poisson ratio

    摘要彈性系數的超聲檢測，即藉助固體彈性常數與超聲波波速間的固有關系，通過測量縱波及橫波在固體中的傳播速度來獲取材料的彈性模量、剪切模量及泊松比。
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