physical attenuation 中文意思是什麼

physical attenuation 解釋
物理衰減作用
  • physical : adj 1 物質的，有形的，形而下的 （opp psychical spiritual mental moral）; 確鑿的；外界的。2 身體的...
  • attenuation : n. 1. 變薄，變細。2. 減少，減弱。3. 稀釋。4. 【物理學】衰減。
  1. The second chapter is about model experiment study, it introduces purpose, scheme, equipment and experiment contents having copperplate and copper ball as object by comparability rule experimenting plenty of physical models, deals with experiment data and makes second field attenuation voltage curves first field isoline both single aperture and mutli - aperture in different situation. in the end, it obtains best depth of multi - aperture source

    利用相似性準則進行大量的物理模擬實驗，實驗觀測中以銅板和銅球作為目標體，詳細介紹了模擬實驗研究的目的、方案、使用設備以及實驗內容，並對實驗數據進行了處理分析，作出了不同模擬條件下單、多孔徑的二次場衰減電壓曲線和一次場等值線圖，找出多孔徑作發射源的探測最佳深度。
  2. The attenuation of the ground vibration is closely relative to the physical and mechanical properties of the ground media

    地面振動隨著遠離振源而產生衰減。衰減的程度與強夯作用場地介質的物理、力學性質密切相關。
  3. This paper has studied the mean attenuation, scattering, and back scattering cross sections of groups of small rotating spheroids about characteristics of microwave scattering when their rotatory axes are oriented at random in any direction in 2d plane and 3d space respectively under the condition of normal distribution, and that those physical quantities are changed with different variance, expectation and wave lengths of incident electromagnetic wave

    本文研究旋轉軸方向分別在平面內和空間中隨機取向呈正態分佈時的小旋轉橢球粒子群的平均衰減截面、平均散射截面、平均後向散射截面等微波散射特徵，以及這些物理量隨軸向分佈期望、方差及入射電磁波波長的變化。
  4. 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。
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