Three pipeline coating detection technologies, multiple-frequency current method, ground potential-electrical field method, and pipe-to-soil potential method, are introduced.
本文在分析国内外现有的防腐层检测技术的基础上，提出了地下金属管线防腐层状态检测的新方法----电流梯度法。
Since its output frequency is as twice as the device frequency and it has the merit of soft-switching characteristic, multiple-frequency induction heater is widely used in high frequency application.
倍频式感应加热电源负载输出频率为功率开关管工作频率的二倍，且功率开关器件工作时具有软开关特性，在需要高频应用的场合很有意义。
Wireless frequencies are a scarce resource, so wireless providers use multiplexing to send multiple calls over a single frequency.
无线频率是稀有的资源，因此无线频率提供商使用多路复用技术通过一个频率发送多个呼叫。
Results are readily displayed and allow the user to quickly understand duplicated values or drill back into the full frequency distribution for single or multiple columns as Figure 11 shows.
评价结果立即显示出来，使用户可以快速理解重复的值，或者回过头查看单个或多个列的全部频率分布，如图11所示。
The root cause for interoperability remains the same--multiple users in different frequency bands using different waveforms.
同样，这也是使用不同波形、不同频率的多个用户不能保持互操作性的根本原因。
The circuit includes an antenna interface module adapted to receive multiple frequency components via an antenna.
该电路包括适 于通过天线接收多个频率成分的天线接口模块。
Within each tissue type, they calculated the frequency that multiple genes were mutated in the same sample.
在每种组织类型中，他们计算了在相同的标本中多基因变异的频率。
A packet scheduling algorithm for mixed traffics was proposed in orthogonal frequency division multiple access (OFDMA) systems.
提出了一种基于正交频分多址接入系统的混合业务分组调度算法。
Structural FE analysis on an integral bus is performed, in which optimal design of multiple performance objectives of structural strength, vibration modal frequency and mass is researched.
对某全承载式大客车进行了结构有限元分析，研究了该客车结构强度、振动模态频率、质量等多个性能目标的优化设计问题。
Via frequency domain methods, the problem of stabilization by output feedback based on observer for linear system with multiple delays was discussed.
针对线性多时滞系统，利用频域法研究了线性多时滞系统基于观测器的输出反馈镇定控制问题。
Firstly, by means of multiple scale method the frequency response function of weakly nonlinear vibration system is derived.
首先，用多尺度法导出弱非线性强迫激励系统的频率响应函数。
A method using the frequency divtion multiplexing technique of the laser speckle's spatial frequency to record multiple displacement information on a single specklegram is presented.
利用激光散斑空间频率的频分多路传输技术，能够在一张散斑图上记录物体多次变形的全场位移信息。
Simulation shows the algorithm has good results in case of estimating single frequency, multiple frequencies and changing frequency under different SNR, and has robustness for noise inference.
仿真结果表明，该方法对于单频、多频和频率变化等情况均具有较好的估计结果，且对于噪声干扰具有较强的鲁棒性。
A new thought of combining frequency estimate method based on FFT with that based on multiple signal classification (MUSIC) is presented.
提出了将基于FFT的频率估计法和基于多重信号分类(MUSIC)的频率估计法相结合的新思路。
Through observation on shock wave and multiple pulsating caused by underwater blasting, the velocity, period, frequency and energy of shock wave and multiple pulsating are analysed.
通过水中爆炸水击波及其多次脉动的观测，分析了水击波及其多次脉动的传播速度、脉动周期、频率及能量分布等特性。
A joint blind estimation method based on spectrum overlap for uplink interleaved orthogonal frequency division multiple access carrier frequency offset and timing synchronization is proposed.
提出了一种基于功率谱叠加的交织正交频分多址系统上行链路载波频偏和定时同步联合估计算法。
Integrated analysis of these results is helpful to strati - graphic interpretation, the analysis of absorption and frequency dispersion, the identification of multiple reflection, and so on.
综合对比这些结果，可用于地层岩性解释、分析吸收和频散作用、以及分辨多次波等。
The calculation result indicates that the torsional vibration frequency will avoid from power frequency and multiple frequency.
计算结果表明，机组扭振频率避开了工频与倍频，轴系不会因共振而破坏。
The realization mode of solving ambiguity for multiple frequency ranging usually has two kinds:quadric difference frequency and uneven dual frequency.
多频测距解模糊的实现方式通常有两种：二次差频和参差双频。
The multiple degrees of freedom (MDOF) waveguide vibration suppressor has the capacity to absorb low frequency sound.
多自由度波导抑振器具有吸收低频入射声波的功能。
Smoothing algorithm is exploited to remove the errors of multiple frequency point, half frequency point and random point, and realize pitch curve smoothing.
使用平滑算法消除倍频点、半频点和随机点产生的误差，实现基音曲线平滑。
But compare with FFT, the calculation time needed by the multiple frequency rotate transform is very long, which has influenced its wide application to a certain extent.
但是，与快速傅立叶变换相比，倍频旋转变换理论所需要的计算时间很长，这在一定程度上影响了它的广泛应用。
Harmonic measure method is the key of the measurement. In this paper, the harmonic measure method which based on the multiple frequency rotate transform theory is researched and analyzed.
谐波测量方法是谐波测量的核心环节，本文对基于倍频旋转变换理论的谐波测量方法进行了研究分析。
The identification of multiple points is one important aspect of long distance radio frequency identification system.
多点识别是远距离射频识别系统中一个关键问题。
The system implements intellectualized transducer setting signal synchronous display in time and frequency domain as well as other multiple signal processing functions.
该系统利用软件实现了智能化的传感器设置、实时采集时的时域信号、频域信号同时显示和多种数据处理分析的功能。
The electro optic sampling system constructed with the multiple frequency phase shift scanning method was introduced.
分析了倍频移相扫描法的工作原理，介绍了用倍频移相扫描法构成的电光采样测量系统。
In this paper, the step frequency response equation of optical-region radar target is firstly established by using theories of multiple scattering centers and local resonance.
本文首先根据多散射中心理论与局部谐振原理，建立了雷达目标在光学区阶梯频率波形激励下的响应方程。
To facilitate realistic testing, the heart of real is the radio frequency attenuation network, a system designed to simulate realistic field conditions for multiple radios.
为方便实际测试，REAL实验室的核心是射频衰减网络，可模拟多个无线电的真实部署。
To facilitate realistic testing, the heart of real is the radio frequency attenuation network, a system designed to simulate realistic field conditions for multiple radios.
为方便实际测试，REAL实验室的核心是射频衰减网络，可模拟多个无线电的真实部署。
应用推荐