查询词典 vibrometer

In first part, presented large-frequency-range and phase-sensitivity laser vibrometer's general scheme and described the measuring principle and feasibility, based on a survey of transducers calibration methods at home and abroad and the project's index.

对动态计量和传感器校准作了一般性介绍后，本文分成两个部分，分别对该两课题进行详细介绍。第一部分在分析了目前国内外加速度传感器的校准技术和课题指标的基础上，提出了宽频带相位型激光测振仪振动测试总体方案并详细描述了测量原理及可行性的论证。

This paper is to study the calibration of the plural sensitivity of hydrophone using laser Doppler vibrometer technology in the frequency range form ten kilohertz to hundred kilohertz, and take steps to make the uncertainty of calibration in the stipulation scope.

本论文研究的内容就是在10～100kHz频率范围内，利用激光多普勒测振技术校准水听器的复数灵敏度，并采耳义相应的措施使校准的不确定度控制在规定范围内，满足实际使用要求。

Results of experiments show that this optical fiber vibrometer is suitable for dynamic mensurement ,capable of making compensation of target surface reflectivity ,illuminating power and mean distance between probe and target surface.

实验结果表明，这一方法适宜于动态测量，可以实现被测表面反射率、入射亮度及探头与被测表面间平均距离的补偿。

Considering influence of external vibration on ultra-low frequency standard vibration systems, the vibration insulating foundation for vibration tables and a laser vibrometer is studied.

针对超低频标准振动系统易受外界振动干扰的问题，研究了超低频标准振动台与激光测振仪的隔振基础设计技术。

In last chapter, two kinds of portable DSPI vibrometer are developed. A new simple and reliable structure for speckle averaging is made up and a circuit to change the phase of wide-band signal (200Hz-100KHz) with keeping amplitude constant is skilfully designed.

巧妙地设计了在保持幅值不变的情况下，对宽带信号（200Hz-100KHz）进行连续和离散相移的电路，研制了一种新型简单可靠的散斑平均器，取得了较好的散斑平均效果。

Research results show that the bottom surface of the tables should rigidly be fixed with ground base, and the bottom surface of the foundation of the laser vibrometer should elastically be fixed with ground base.

结果表明，振动台基础底面应与地基刚性连接，而激光测振仪基础底面应与地基弹性连接；优化橡胶减震垫的布局可以提高激光测振仪隔震系统的稳定性。

The basic principle, measurement characterization, application status and problems are illustrated specifically in this paper, the advantages/disadvantages of these techniques are analyzed for piezoelectric applications, and the results show that combining the high resolution of the interferometer and the surface scanning ability of laser scanning vibrometer may lead to a convenient, accurate and reliable method for assessing piezoelectric coefficient.

详细分析了这些方法的基本原理、测试表征、应用状况和存在的问题，比较了这些方法的优缺点。

A laser Doppler grating vibrometer based on the two-phase detecting technique and the rectangular phase grating is experimentally researched.

与传统的测量方法相比，该技术具有测量精度和空间分辨率高、测量范围广、响应快、非接触、并能进行多维测量等特点。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了