frequency metrology 中文意思是什麼
frequency metrology
解釋
頻率計量學-
Definitions of physical quantities for fundamental frequency and time metrology - random instabilities
基本頻率和時間計量學用物理量定義.隨機不穩定性 -
Standard definitions of physical quantities for fundamental frequency and time metrology - random instabilities
基頻和時間計量學用物理量標準定義.隨機不穩定性 -
If topic # 1 is not presented, this proposed seminar could include a brief overview of the fundamentals of time and frequency metrology and standards as in # 1, before focusing in more depth on practical metrology
如果上一專題未宣講，應先做一個時間頻率計量學基礎的簡要介紹，然後才可以著眼與深入的實踐計量學。 -
A more in - depth discussion of commercially available time and frequency measurement equipment and standards, and how such instrumentation can be used in the metrology laboratory
市場上可用的時間頻率測量設備和標準的更深入的討論，以及此類儀器如何應用在計量實驗室。 -
In recent years, the metrological scholars of some developed countries have been taking great efforts on capacitance metrology in the frequency range from acoustic frequency to microwave, and several countries have set up their capacitance standard in the extended frequency range
十幾年來，發達國家的計量學者一直進行音頻到微波段電容計量的研究，少數國家已經建立了擴展頻段電容標準及溯源體系。 -
In order to build and modify the national capacitance standard in the extended frequency range and testing system, national institute of metrology p. r. china establishes the corresponding project, named “ capacitance metrology ”, to study the technology of capacitance metrology in the extended frequency range
為了建立和完善國家現代電學計量標準中擴展頻段電容標準和檢測體系，中國計量科學研究院立項進行「電容擴頻」技術的研究。本文是筆者在參加該科研項目的基礎上完成的。 -
The author accomplished this dissertation through taking part in the project. the main contents of this dissertation are : based on the national capacitance standard, the principle and the measurement method for capacitance metrology are studied, and the frequency response of a four - terminal - pair ( 4tp ) capacitor acted as the capacitance standard is measured in the extended frequency range
本文研究的主要內容是:在國家「電容基準」的基礎上，選用四端對電容器作為標準器，研究電容量值擴展頻段的計量原理及方法，測定其頻率響應，建立國家的擴展頻段電容標準;以擴展頻段的電容標準為量值標準，進行測量四端對電阻器和校準單埠電容器頻率響應的研究。 -
The study on single electron transportation induced by a high frequency surface acoustic wave ( saw ) has important influence on the base theory of physics, further development of semiconductor devices and the research of metrology
高頻表面聲波（ saw ）驅動下的單電子輸運問題的研究對物理學的基礎理論、半導體器件的進一步發展和計量學的研究具有重要意義。 -
Our national capacitance metrology level in the low frequency range ( below 10 khz ) has reached the international advanced level. but with the development of science and technology, there exists a big difference between our national and international advanced level in the aspect of the frequency range and the capacitance range etc, especially in the aspect of the frequency range. so the capacitance metrology technology in high frequency cannot meet the need of testing for impedance metrology standards and the measurement instruments
在低頻段（ 10khz以下） ，我國電容計量水平已達到國際先進，但隨著科技的發展，在頻率范圍、量值范圍等方面與國際先進水平有較大的差距，特別是在頻率范圍方面，不能滿足進口阻抗計量標準器及其測量儀器的檢定測試要求，迫切需要在頻率范圍上進行擴展。 -
In this dissertation, the present research status of standard vibration metrology technique at home and abroad is introduced, and the significance of developing ultra - low - frequency standard vibration metrology is discussed as well. systematic research has been done in developing ultra - low - frequency standard vibrator. several key technical problems are solved in order to develop the calibration system of this kind of vibrator
本文在分析了國內外標準振動計量技術的研究現狀以及超低頻標準振動計量的重要性的基礎上，以研製超低頻標準振動臺校準系統為目的，對建立超低頻標準振動臺校準系統的若干關鍵技術及其實現方法進行了研究。 -
Firstly, the properties of vibration transducers and their calibration methods are given, and the significance of establishing ultra - low - frequency standard vibration calibration system is pointed out. secondly, the present research status on standard vibration metrology at home and abroad is surveyed. thirdly, some problems in the ultra - low - frequency standard vibration metrology and the future direction are pointed out
首先介紹了振動傳感器的特點及其校準方法，指出建立超低頻標準振動計量的重要性；然後回顧了國內外標準振動計量的研究現狀；接著分析了超低頻標準振動計量存在的問題並指出了研究方向；最後介紹本論文的研究內容。
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