GIS partial discharge; ultrasonic detection; ultra-high frequency detection.
GIS局部放电；超声波检测法；超高频检测法。
The principle of MOS capacitance measurement based on the method of high frequency detection is presented.
MOS结构高频C-V（电容-电压）特性测量是检测MOS器件制作工艺的重要手段。
Based on the dynamic balancing of rigid rotors, an integral digital tracking filter method is put forward for fundamental frequency detection.
以刚性转子现场动平衡为背景，提出了用于基频检测的积分型数字跟踪滤波法。
A distributed parameter circuit model is constructed according to characteristics of the radial distribution network and selection of appropriate frequency detection signal.
针对树形配电线路特点，选取适当频率的正弦诊断信号，建立分布参数电路模型。
In this paper, based on a narrow IIR BPF cascaded by an adaptive FIR filter, a novel fast adaptive algorithm for sinusoid frequency detection in noisy environment is depicted.
提出一种新的自适应算法估计被噪声污染的正弦波信号的频率，依据IIR窄带滤波器和自适应FIR滤波器的级联，形成快速有效的自适应算法。
The method for locking frequency according to CPT line is studied. The model of frequency detection for physical package is attained according to analysis the course of detection.
进而研究根据CPT谱线实现原子钟锁频的数学过程，并通过对激光调制过程中物理鉴频系统的信号流分析得到物理系统的鉴频模型。
Based on dynamic analysis of resonator, speed resonant frequency detection for the resonant pressure sensor is compared to displacement resonant frequency detection systematically.
在谐振器动力学分析的基础上，系统地比较了谐振式压力传感器检测速度谐振频率和检测位移谐振频率的优缺点。
The examination hardware system is developed, which includes system design, A/D sampling subsystem, frequency detection and downconversion subsystem, PCI data transmission subsystem.
完成了硬件实验平台的研究与开发，包括系统的硬件设计方案，以及A/D数据采样板、测频与下变频处理板和PCI 卡的设计。
This paper introduces the detection area, detecting points arrangement, detection contents and methods, detection time step and frequency, detection institutions and detection supervision system, etc.
介绍了巴公电厂热电联产改扩建工程水土保持工作中的监测区域、监测点布设、监测内容与方法、监测时段与频率、监测机构和监测监督制度等。
This paper introduces the detection area, detecting points arrangement, detection contents and methods, detection time step and frequency, detection institutions and detection supervision system, etc.
介绍了巴公电厂热电联产改扩建工程水土保持工作中的监测区域、监测点布设、监测内容与方法、监测时段与频率、监测机构和监测监督制度等。
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