ultrasonic waves 中文意思是什麼

ultrasonic waves 解釋
超聲波
  • ultrasonic : adj. 超音的，超音速的。 ultrasonic wave 超聲波。n. 超聲波。
  • waves : WAVES ＝ Women Accepted for Volunteer Emergency Service 〈美舊〉（海軍）婦女預備隊。
  1. Cracks can be detected by a method using ultrasonic waves.

    疵點可用超聲波方法檢測。
  2. A look at the ways animals use electromagnetism, luminescence and infrasonic as well as ultrasonic waves

    -照顧動物福利拯救被遺棄動物接收棄養動物並安排領養提供住院醫療
  3. The device is manufactured with state - of - the - art technology. it works by vibrating ultrasonic waves to the deeper layers of the skin to restore elasticity and tonicity

    中外合資之先進科技傑作，機身輕巧及流線型設計，機件性能良好及耐用，配合美容產品使用，可加強產品之功效。
  4. Rock - determination of the ultrasonic waves velocity in laboratory - transmission method

    巖石.實驗室測定超聲波速度
  5. Laser, ultrasonic beam and microwave are used in non contacting level measuring systems. laser systems suffer from dirt, ultrasonic sensors are strongly affected by changes of the velocity of sound and usually a pipe is needed to couple the ultrasonic waves into the liquid tank, which is difficult when there is a high pressure or when explosion protection is necessary

    壓力式液位測量系統原理簡單、成本低，但測量精度和應用場合有一定的局限性，超聲液位儀精度較高，但設備復雜，一般需要用導管將超聲波傳到被測的液體中，因而安裝維護較麻煩，激光測距系統對環境要求嚴格。
  6. A simple method for liquid level measurement using ultrasonic waves

    利用超聲波實現液位測量的簡單方法
  7. In principle, ultrasonic sensors are suspended over a road, which keep emitting pulse signals periodically to nearby and feed back waves to decide existence of any obstacles, thus to detect the speed, height, length, different sizes ( heavy, medium and small ) of moving vehicles and accumulative flow as well as length of motorcade. optionally, it can be applied to multitude driving lanes simultaneously for traffic data. by integrating and analyzing these measured data, the necessary figures concerning traffic flow may be obtained, which are fundamental basis guiding road buildings

    本課題設計的是一種懸掛式超聲波車流多信息檢測器，通過懸掛于路面上方的超聲波探頭向路面周期性地發射脈沖信號，利用地面回波來判斷遮擋物地存在，可用於檢測行駛中的機動車車速、車高、車長、大中小分型以及累計車流量、車隊長度等信息，並可用於多個車道車流信息的同時檢測，綜合這些測量參數可獲得車流量的必要數據，可為公路建設提供必要的基礎依據。
  8. However, seed dormancy can be broken by a variety of physical treatment such as mechanical, temperature, stratification, hot and dry storage, radiation, ultrasonic waves, magnetic field etc

    物理方法包括機械處理、溫度處理、低溫層積、干藏和乾熱處理、射線、超聲波處理和電場、磁場處理；化學處理包括激素處理、無機化學藥劑處理和有機化學藥物處理。
  9. Standard practice for the measurement of the apparent attenuation of longitudinal ultrasonic waves by immersion method

    用浸漬法測量縱向超聲波的表面衰減的標準操作規程
  10. Is characterized by colour digital display with 4 probes, ultrasonic induction, accuratedetection and entering back action, automatic start of anto - collision indication system, digtal display with location, perspective of barriers position and easy installation, which improves substantially the car s practicability, that is it is not disturbed in rain ang nighe, performing its advantages for it s against the disturbance of the strong electromagnetic waves. it is applied to the temperature in the range of - 40 85. it is also characterized by the three - grade dulcet for foretelling, colour digital indication, anti - vibration protection device, durable damp - proof treatment, inserting installation, original configuration, beautiful appearance and firmness. it also adopts anti mal alarm technology. it is specially produced, and its quality is ensured

    數碼四探頭彩色顯示超聲波感應，偵測準確進入倒檔，自動開啟防撞提示系統數碼加方位顯示，效果能透視障礙物位置安裝容易，大大提高原車實用性能不受雨天黑夜等影響，盡顯優勢抗強電磁波干擾適應溫度寬40 85三級悅耳預
  11. 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。
  12. Finally, some important conclusions were drawn, that is, using distributed pzt transducers, ultrasonic guided waves are generated and received in a pipe. usually, there are many different modes of guided wave propagating in the pipe and these modes are generally dispersive, the specific exciting signal of a harming windowed toneburst with a central frequency of 70khz for decreasing the effect of dispersion was selected. and guided wave are generated using 16 distributed pzt transducers in a circumferential direction for suppressing flexural modes

    首先，對當前本課題研究領域的進展作出綜述，並簡要介紹與超聲導波技術相關的理論基礎；其次，建立了一套有效的實驗裝置，在此實驗裝置基礎上，重點研究了採用分散式pzt傳感器在管中激勵和接收特定模態超聲導波的方法：根據在管狀波導中傳播的超聲波具有頻散現象及多模態特徵，選擇具有單一頻率的特定信號激勵超聲導波，使其頻散最小；同時採用分散式傳感器抑制不同模態的波型。
  13. If you ' ve ever seen ultrasonic waves

    如果你們在探索頻道上看過
  14. Recommended practice for immersed ultrasonic testing by the reflection method using pulsed longitudinal waves

    液浸式超聲縱波直射探傷方法
  15. An alternative to traditional pipe detection method is to excite stress waves, which can propagate along the pipe, and to monitor the response of the pipe for changes in the received signal at some remote positioa an ultrasonic inspection technique using guided waves was applied to detect and determine the exact location of flaws in long steel pipes

    而傳統無損超聲檢測技術是單點檢測，因而，在檢測長距離管道時，這種方法遇到很大困難。而利用縱向超聲導波檢測管道缺陷，激勵導波沿管道傳播，通過監測管道回波的變化，達到一次檢測數十米的管道範圍，並且是全范圍檢測。
  16. 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。
  17. This paper introduces two methods of ultrasonic characterization of thin layers : longitudinal pulse - echo and lamb waves

    摘要介紹了兩種常用的材料薄層超聲表徵方法縱波脈沖回波法和蘭姆波法。
  18. Ultrasonic guided waves technique is a new technique because of its advantages : fast, economical and reliable. unfortunately, there is n ' t guided - waves transducer in our country at present. based on this problem, the aim of this project is just to develop a kind of guided - waves transducer system with which we can generate and receive ultrasonic guided waves in pipes

    超聲導波檢測技術以其檢測速度快、可靠、經濟而且不需要剝離管道外包層等優點成為管道缺陷檢測技術一個新的發展方向，但是目前國內還沒有應用該技術對管道缺陷進行檢測的探頭，本文正是從這個問題出發，目的在於研製一種用於在管道中激勵和接收超聲導波的探頭系統。
  19. Effect of ultrasonic waves on the rheological behavior of polymer solution

    超聲波對聚合物溶液流變性的改變
  20. An instrument that in a painless and noninvasive manner uses the differential transmission and reflection of ultrasonic waves to create a detailed visual image of the brain

    超聲波心動描記器一種用來顯示詳細的大腦圖象的儀器，利用超聲波發送和反射的差異來測試並無傷無痛
分享友人
分享到 Line

分享到臉書