ultrasonic attenuation 中文意思是什麼

ultrasonic attenuation 解釋
超聲波衰減
  • ultrasonic : adj. 超音的，超音速的。 ultrasonic wave 超聲波。n. 超聲波。
  • attenuation : n. 1. 變薄，變細。2. 減少，減弱。3. 稀釋。4. 【物理學】衰減。
  1. Based on analyzing the theoretical model of ultrasonic attenuation, the formula was integrated into the ultrasonic attenuation model, and the relation of ultrasonic attenuation to pulp density and particle size was derived

    在分析超聲衰減基本理論模型的基礎上，將不同粒徑的篩下累積含量集成到超聲波衰減模型中，推導出超聲波衰減與礦漿濃度、粒度之間的關系模型。
  2. Method for measurement of ultrasonic attenuation coefficient of solid by pulse echo technique

    用脈沖回波技術測量固體超聲波衰減系數的檢測方法
  3. This method overcomes the difficult and unrealizable experiment conditions that are used to measure the absolute attenuation coefficient and impels the technique of ultrasonic characterization to be more closed to the engineering requirements and more practical

    該方法克服了絕對衰減系數測定法對實驗條件要求極為苛刻、難以實現的不足，使得超聲表徵技術更接近工程條件、更具實用價值。
  4. 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
  5. According to structural characteristics of multi - phased alloy steels and the properties of ultrasonic propagation, microstructures characterization with different heat treatment processes ( normalizing, quenching / annealing, quenching plus low tempering, quenching plus high tempering ) for three steels ( 40cr, 38crmoal, gcrlssimn ) was studied experimentally by using ultrasonic methods. ultrasonic velocity, relative attenuation coefficient, and power spectral analyses were researched on the same samples respectively, on the basis of theory and experiment, the sensitivity and other characterizations of the three methods used to distinguish different microstructures were compared

    根據具有多種相結構合金鋼不同熱處理轉變產物的組織特點，以及超聲波在其中的傳播規律，利用超聲波速度、相對衰減系數以及功率譜分析三種方法，對三種鋼（ 40cr 、 38crmoal及gcr15simn ）不同熱處理（正火、淬火退火、淬火+低溫回火及淬火+高溫回火）轉變產物的顯微組織進行了超聲表徵研究。
  6. ( 2 ) based on the mode of ultrasonic echo, this paper designs a frequency - dependent compensation filter to compensate the absorbed attenuation when the ultrasound transmits in a tissue

    （ 2 ）在建立超聲回波信號的數學模型的基礎上，設計了頻率補償濾波器。
  7. Standard test method for measurement of ultrasonic attenuation coefficients of advanced ceramics by pulse - echo contact technique

    用脈沖反射接觸技術測量高級陶瓷超聲衰減系數的標準試驗方法
  8. Frequency spectral analysis for the ultrasonic attenuation of carbon fiber reinforced plastics

    碳纖維復合材料對超聲衰減的頻域分析
  9. The third chapter in the paper presents a method that we can select suitable ultrasonic frequence in the analysis of the ultrasonic attenuation

    在論文第四章對超聲波在液壓缸中衰減的分析中提出了選擇合適超聲頻率的一種方法。
  10. The correlation between ultrasonic attenuation and particle size distribution was given by combining experiments with data analysis, and an inverse parameters optimization method, genetic algorithm, was applied for particle size distribution

    將所推導的模型結合實驗和數據分析以確定超聲波衰減與粒度分佈的關系，且採用遺傳演算法反演計算獲得礦漿中粒的粒度分佈。
  11. Ultrasonic distance measurement is the new distance measurement. this thesis studies the ultrasonic distance measurement, and reasearchs ultrasonic attenuation in the atmosphere and hydraulic oil, analyses the factors which inflence measurement precision

    文中對超聲波在空氣中、液壓油中的衰減情況進行了分析，並對在空氣中、液壓缸中的影響測量精度的幾個因素進行了分析。
  12. A formula is proposed for calculating the sand content of different size in the case of matching particle size of sand, thus obtaining the correlation between ultrasonic attenuation and density of solid particles in the pulp, as well as particle size

    提出了在礦砂粒徑尺寸級配情況下的不同粒徑時的礦砂含量的公式，並由此得到了超聲波衰減與礦漿中固體顆粒濃度、粒度之間的關系。
  13. Analysis on the primary cause of causing amplitude attenuation in the ultrasonic vibration cutting after frequency tracking

    在頻率跟蹤后引起振動切削過程中振幅衰減的主要原因分析
  14. According to the test results from 18mm - thick - steel plate adhering to concrete, gas and oil, the obvious differences in the attenuation coefficient and number of bottom waves are found. the test results shows that it is feasible to adopt ultrasonic longitudinal wave reflection method to test the bonding quality of the steel and

    採用超聲縱波反射法單面檢測鋼-混凝土的粘結質量是可行的，採用底波衰減系數和底面反射波的個數作為判定鋼-混凝土的粘結質量依據是有效的，所採用的理論分析模型是正確的。
  15. Furthermore, numerical simulations and experiments of inversion of velocity and attenuation are made. results indicate that inversion of ultrasonic can reflect the position, size and property of defects right

    本文對超聲波速度反演進行了數值模擬和試驗研究，結果表明速度反演能正確反映混凝土內部缺陷的位置、大小和超聲波速度性質。
  16. In addition, concrete inner defects are identified based on two different physical parameter, velocity and attenuation, which will greatly increase precision and reliability. in conclusion, the developed ct technique of ultrasonic for concrete non - destructive test is of great significance in both theory and practice

    在利用速度反演得到混凝土聲速和衰減反演得到混凝土吸收系數的基礎上，本文根據聲速和衰減兩種不同的物理參量判別混凝土內部缺陷，可大大提高缺陷判別的精度和可靠度。
  17. The application of longitudinal pulse - echo is relatively simple, which can provide information of the thin layers such as the depth, ultrasonic velocity, attenuation etc

    縱波脈沖回波法簡單易行，能夠獲得薄層厚度、聲速和衰減等信息。
  18. During designing hardware circuit, we have used the supreme limitation to raise driving - ability and raise the distance of measurement to returning ware by taking some measurements just like multi - polar enlarging, according to the ultrasonic characteristic of index attenuation when it ' s spreading because we need to measure longer distance ( from several meters to dozens of meters )

    在硬體電路的設計中，由於需要測的距離較長（幾米到十幾米） ，針對超聲波振幅在傳播時呈指數衰減的特性，最大限度地提高驅動能力，對回波進行多級放大，達到了設計要求。
分享友人
分享到 Line

分享到臉書