A novel ultra-low frequency vibration isolator is established.
研制一种新型超低频垂直隔振系统。
The results on the study of ultra-low frequency isolator are summarized.
论述了国内外各种超低频隔振系统的研究状况。
The relationship between the sleep stage and the ultra-low frequency components of HRV is also considered.
在特征提取中还考虑了HRV中超低频分量和睡眠的关系。
An economical technique is presented of conventional tape recording and replay for ultra-low frequency signal.
介绍一种经济实用的用普通磁带记录与回放超低频信号的方法。
The paper introduces the precise measuring circuit of ultra-low frequency voltage based on the characteristics of the measurement of ULF.
根据超低频电压信号测量的特点，给出了一种精密测量电路。
The types, principles, features, and applications of displacement sensor used in ultra-low frequency active vibration isolation control are introduced.
介绍了超低频主动隔振控制中常用的位移传感器的类型、工作原理、结构特点及适用范围。
QS15 ultra-low frequency system is equipped with a 15-inch bass, high energy drive, a well-designed to accommodate the logarithmic horn loaded box in the.
QS15超低频系统配备一个15英寸低音，高能量驱动器容纳在一个良好设计的对数式号筒装载箱体中。
The methods of realization of nonlinear stiffness and applications of combined positive and negative stiffness in ultra-low frequency vibration isolation are analyzed.
分析了刚度非线性的实现方法及正负刚度并联技术在超低频垂直隔振系统中的应用。
The inverted pendulum, folded pendulum, X pendulum and conical pendulum ultra-low frequency vibration isolation systems, which are developed from single pendulum, are introduced.
介绍了由单摆改进而成的倒摆、折叠摆、x摆和锥摆等超低频水平隔振系统。
This paper presents two kinds of approximate analytical solution, non-resonance solution and resonance solution, of non-linear dynamic equation based on a type of ultra-low frequency vibrator.
给出了一类超低频标准振动台非线性运动方程的两种近似解析解——非共振解法和共振解法。
Several times during the summer of 1997, the U. S. National Oceanic and Atmospheric Administration recorded an ultra-low frequency underwater sound using U. S. Navy "spy" sensors 3,000 miles apart.
1997年夏天，美国国家海洋大气局使用美国海军“间谍”探测器记录下了一段3000英里外水下的超低频声音。
It cart be combined with the general-purpose oscilloscope to realize non-fade mode display, waveforms freeze, and series mode display for 4-channel biological signals or ultra-low frequency signals.
该装置与通用示波器配合，即能对四路生理信号或超低频信号实现非消隐显示和波形的“冻结”、串接等显示功能。
As far as cased-hole formation resistivity logging, the key problems needed to be solved are detection of ultra-low frequency and extremely weak signals, as well as reduction of strong interferences.
超低频、纳伏级信号的检测以及强干扰的抑制是过套管地层电阻率测井需要解决的关键问题。
Magnetic field of ground vehicles and warships is ultra low frequency, alternate and feeble.
车辆及舰船的磁场是超低频交变弱磁场。
The formula of waveform distortion is obtained by the approximate result expression of nonlinear equation about ultra low frequency standard vibrator with this kind of emulsion pipe spring.
同时求解了采用该乳胶管弹簧下的超低频标准振动台的运动方程近似解，得到了波形失真度计算式。
In terms of operation frequency, RFID systems can be divided into four categories: low frequency (LF), high frequency (HF), ultra high frequency (UHF), and microwave.
根据工作频率来分，RFID系统可以分为低频，高频，超高频和微波四个波段。
A frequency domain characterization method using low frequency ultrasound is put forward to estimate parameters of ultra thin elastic layers, such as: the sound velocity, thickness and density.
本文提出一种定量无损估计超薄弹性层声速、厚度和密度参数的低频超声波频域定征方法。
The primary results show that the ultra low-frequency pulses may produce in the process of nucleation of micro-cracks and faults, and transmit to the air as infrasonic sound.
初步结果表明，微破裂的集结和断层的破裂起始会出现超低频脉冲，并透射到空气中形成次声波。
The main experimental problems are analyzed with the ultra-low-frequency measurements.
用这种超低频测量分析了主要的实验问题。
A low frequency ultrasonic (Lamb like) wave method is used for characterizing the shear, longitudinal wave velocities, the thickness, and the density of ultra thin two layered bonding composite.
提出用低频超声类兰姆波定征方法来估计超薄双层胶结复合结构各层的纵波声速、横波声速、厚度和密度等参数。
A low frequency ultrasonic Lamb like wave method suitable for characterizing the thickness, density, shear and longitudinal wave velocities of the ultra thin bonding composite is presented.
提出用低频超声类兰姆波定征方法来估计超薄黏结复合结构各层与黏结层的厚度、密度、纵波声速和横波声速等参数。
A low frequency multi mode ultrasonic Lamb wave method suitable for characterizing shear and longitudinal wave velocities, thickness and density of ultra thin elastic layers is presented.
提出了用低频多模式超声兰姆波定征方法来估计超薄弹性层的纵波声速、横波声速、厚度和密度等参数。
The experimental results show that the receiver has characteristics of ultra-low noise, high gain and good frequency response, which satisfies the requirements of the 3mmW LFMCW radar system.
实验结果表明，该接收机具有超低噪声、高增益和好的频率响应特性，可满足三毫米波LFMCW雷达系统应用的需要。
Various frequencies such as Low Frequency, High Frequency, Ultra Frequency and Microwave, which are available to RFID, have different properties.
在RFID可以利用的低频、高频、超高频、微波等各个频率中，各种频率都是具有不同的特点。
Ultra low noise fiber optical microphone designed for monitoring very weak sound signals in selected frequency bandwidths.
超低噪音光纤麦克风设计用于监测在选定的频率带宽内非常微弱的信号。
His research interests are in the implementations of transceivers and frequency synthesizers for cellular and ultra-low power applications.
他的研究兴趣是在蜂窝和超低功率应用的收发器和频率合成器的实现。
A new method for measuring the total harmonic distortion of ultra low frequency signa1 by means of FFT algorithm is presented and the measuring error is analysed in this paper.
本文提出了采用FFT算法来测量超低频失真度的方法，解决了超低频失真度的测量问题。
Physiological signals can't be transmitted through telephone networks because they are full of ultra low frequency components.
由于生理信号的超低频分量相当丰富，利用电话网络无法直接传送。
An automatic measuring system for measuring parameters in ultra-low-frequency metrology is developed by fully utilizing the existing standard instruments. The system is controlled by a microcomputer.
充分利用现有的标准仪器，在微机统一控制下，组成一个超低频参数计量的自动测试系统。
The invention provides an ultra low frequency magnetic excitation device and a method for operating the device.
本发明提供了一种超低频磁刺激装置及其工作方法。
应用推荐