ultrasonic attenuation measurement 中文意思是什麼

ultrasonic attenuation measurement 解釋
超聲衰減測量
  • 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。
  • measurement : n. 1. 測量，計量，量度。2. 份量，尺寸，大小，寬度，厚度，深度（等）。3. 測量法。 measurement goods （按體積、容積計算的）體積貨物。
  1. 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
  2. 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
  3. 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
  4. 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。
  5. 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。
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