Study on center frequency of tomato water stress based on virtual instrument
基于虚拟仪器的番茄水胁迫中心频率的研究
In this paper,developed are a method and correspondent software for calculating formation permeability from the center frequency shift and travel time delay in direct Stoneley wave.
利用多极子阵列声波测井资料提取直达斯通利波、计算斯通利波中心频率偏移和时间延迟来进行地层渗透率反演的方法已被研究了多年。
This paper derives the universal formulas for three characteristic parameters, center frequency, gain of center frequency and quality factor of bandpass filter, calculates the theoretical values of the three characteristic parameters; analyzes the effects of center frequency migration of bandpass filter on logs.
双侧向测井仪电子线路中的带通滤波器中心频率偏移直接影响地层电阻率测量值准确性，文章从理论上导出了带通滤波器的三个特性参数：中心频率、中心频率处增益、品质因素的通用表达式。
The main method is combined the square wave circuit with the switch capacitor filter MAX268BCNG to realize the automatic tracking filtering at the central frequency,which is form1Hz to 15Hz.
为了自动跟踪信号频率变化除去噪声,本文研究了一种能自动跟踪信号频率变化的窄带通滤波器,滤波器由方波发生电路和开关电容滤波器MAX268BCNG相结合来实现,其中心频率可在1Hz和15Hz之间自动跟踪。
The central energy variation of electron bunch is obtained by measuring the central frequency, which is in agreement with the result from measuring closed orbit and horizontal dispersion function.
还通过测量电子回旋中心频率测出了电子束中心能量的相对变化 ,与由测闭轨和色散函数计算出的结果相互吻
The key technique of this new filter is how to achieve the extreme narrow band-pass width and a slight deviation of central frequency.
如何实现极窄的通带宽度和极小的中心频率偏差是研制中所解决的关键技术问题。
The result shows that the total mass ratio,the damping ratio,the center frequency ratio, frequency bandwidth and the total number of TMD have very important effect on structural vibration control.
结果表明:MTMD的总质量比、阻尼比、中心频率比、频带宽度和TMD的个数等参数对结构振动控制有重要影响,设计中应根据实际结构的具体情况对MTMD的各种参数进行必要的优化,以获取最优的控制效果。
An improved douHe-T network is described and its central angular frequency ω_0 andquality factor Q are given.
介绍一种改进的双Ｔ网络，并给出这种网络的中心角频率ω＿０和品质因数Ｑ，和传统的对称双Ｔ网络比较，它具有对元件参数要求不严和易于调试的特点，同时给出了改进双Ｔ网络的实用电路和调试方法。
center frequency
中心频率未调制频率
Intermediate frequency amplifier center frequency
中频放大器的中心频率
W is the radian frequency deviation from the center frequency
△W是角频率与中心频率的偏离值。
△W is the radian frequency deviation from the center frequency.
△W 是角频率与中心频率的偏离值。
The center frequency tunability characteristic of the filter is investigated as well.
研究了该滤波器的中心频率的可调谐特性。
The Design of FIR Digital Filter with Regulable Center Frequency;
中心频率可调的FIR数字带通滤波器设计
Tunable Negative Index Metamaterials Using Nematic Liquid Crystals
负折射超材料响应中心频率的液晶调控
Study on center frequency of tomato water stress based on virtual instrument
基于虚拟仪器的番茄水胁迫中心频率的研究
Bandwidth and central frequency are two key factors to it's quality.
带宽和中心频率是射频噪声干扰品质的决定因素。
Using Multi-central Frequency Distributed Small Satellite SAR to Achieve Wide Swath and Two Dimensional High Resolution
分布式小卫星多中心频率SAR实现宽域二维高分辨率成像
The Influence of SAWF Centre Frequency with Cutting Error in Piezoelectric Substrates;
压电基片切割误差对声表面波滤波器中心频率的影响研究
Resolution Ability of Fractional Fourier Transform in Multi-component Chirp Signal Center Frequency
分数阶Fourier变换对多分量Chirp信号中心频率的分辨能力
Simulations of A Quasi-Yagi Planar Antenna Working in 3GH
一种中心频率为3GH的微带准八木天线的仿真设计
frequency control & analysis center
频率控制与分析中心
The Analysis of the Instantaneous Frequency And Its Application in the Heart Sound Signals Processing;
瞬时频率分析及其在心音信号处理中的应用
Method for Doppler centroid estimation of airborne radar with a high pulse repetition frequency
机载高重复频率雷达多普勒中心估计方法
fixed-rate pacemaker
固定频率心脏起搏器
The middle part of an audio frequency.
中声频，中频声波频率的中间部分