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 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
center frequency
中心频率未调制频率
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。
demand pacemaker
可调频率心室抑制起搏器
Intermediate frequency amplifier center frequency
中频放大器的中心频率
This FD method can be used for AFC of the coherent-on-receive system.
这种频率鉴别方法可以用在接收相参系统中的自动频率微调。
Frequency mondulation, which is not possible with polychromatic light.
多色光不可能调制频率。
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
Application of Dig ital Potentiometer in Frequency-Adjustable Sig nal Source
数控电位器在频率可调信号源中的应用
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。
frequency control & analysis center
频率控制与分析中心
Most common form of frequency modulation in which two possible states (one and zero) are transmitted as two separate frequencies.
最常用的一种频率调制方式,其中两个可能的状态(1和0)是作为两个离散的频率来传输的。
Research and Design of Frequency Tunable RFID Antenna
频率可调RFID天线的研究和设计
Ultrasonic frequency adjustable driver's circuit design
一种频率可调超声波驱动电路的设计
Variable Dividers in Frequency synthesizer of Rb Frequency Standard
用于铷频标频率综合器中的可变分频器
We have discovered that the signal freguency receivered driffes off and small in making up the receiver of882 F freguency modulation.
在882F调频接收机组装过程中发现,调频接收频率偏小。
modulator carrier
调制器载(波)频(率)
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