In this paper, the acoustic impact testing method has been presented with two different excitation methods: the tap testing method and the acoustic impedance testing method.
依据激励方式的不同，本文分别从敲击检测以及声阻检测方法两个方面对声振检测方法进行了介绍。
Soil: investigation and testing. Auscultation of buried work. Part 4: impedance test.
土壤。调查与试验。地下工程检测。第4部分：阻抗试验。
Under these circumstances, impedance monitoring may obviate the need for bile acid reflux testing.
在这种情况下，可利用胆汁酸反流检测排除阻抗检测的需要。
The basic principle of eddy current testing is introduced and the coil impedance responses due to the variations of the probe coil lift-off are analyzed and studied.
简要介绍了涡流检测的基本原理和涡流探头的特性；分析和研究了涡流检测探头提离变化对阻抗的影响；
By comparing input impedance values before and after optimization, it is showed that the error of input impedance decreases sharply when improved testing device is adopted.
优化前后输入阻抗理论值比较表明：采用优化的测试装置进行测试，输入阻抗误差显著减小，并且这一结论在通常意义下都有效。
Realizing the impedance test by sampling and testing voltage of series resistance with the AD convertor;
利用AD采集测试串接电阻电压实现阻抗测试；
Impedance analytical method is presented, through which we analyze some factors that alter testing coil impedance's value.
阐述了阻抗分析法，并用其分析了影响检测线圈阻抗变化的几个因素。
However, due to large system impedance of ITER testing platform, the requirement of reducing transformer impedance is commonly met in actual transformer industry.
然而，由于ITER测试平台的大的系统阻抗，从而降低变压器阻抗的要求通常在实际变压器行业满足。
So the capacitance metrology technology in high frequency cannot meet the need of testing for impedance metrology standards and the measurement instruments.
为了建立和完善国家现代电学计量标准中扩展频段电容标准和检测体系，中国计量科学研究院立项进行“电容扩频”技术的研究。
This paper introduces the circuit design principle, component selection, installment, testing and application of a two-way impedance electric chemical test pre-placed magnifier.
介绍了一种双路高阻抗电化学测试前置放大器的电路设计原理、元件选择、安装调试及其应用。
This paper introduces the test principles and the technical advantages of alternating current impedance test method for testing the anti-corrosion properties of pipeline coating.
本文介绍了交流阻抗试验方法测定管道和大型油罐防腐涂料防腐性能的优点及测试原理。
It provided suefull data for hydrocarbon testing, well logging velocity calibration, sonic impedance inversion, and modelling and is significant for guiding oil-gas exploration of this area.
为油气碳氢检测，测井速度标定，声阻抗及演，模型正演等提供了有价值的数据。
The results show that the instrument is appropriate for testing the internal impedance of Ni-MH and Li-ion battery.
测试结果表明，该仪器的功耗达到了实用性，精度较好地满足了电池的内阻测试要求。
The results show that the instrument is appropriate for testing the internal impedance of Ni-MH and Li-ion battery.
测试结果表明，该仪器的功耗达到了实用性，精度较好地满足了电池的内阻测试要求。
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