本文首先对低场磁共振电路系统的各个功能模块进行了分析，并估算了低场磁共振的信号幅值，然后重点对天线接口和前置放大两个电路模块进行了分析研究。
The function blocks of the low field NMR circuit system are analyzed at first. Then the signal amplitude is calculated. The antenna interface and the preamplifier are studied in detail at last.
位于能量传输电路中的这个频率，如果和接收器电路中的频率不同，则两者没有共振。
If the frequency in the energy-transmitter's circuit is different from that of the receiver's circuit, they are non-resonant.
量子比特和存储器之间通过为我们称为共振器件的设备连接，振荡电路使量子比特的值能够保存一段短的时间。
The links between the qubits and the memory contain devices known as resonators, zigzagging circuits inside which a qubit's value can live on for a short time.
本文介绍了核磁共振的原理及小型核磁共振系统电路部分的设计。
This text introduce the theory of nuclear magnetic resonance and the design of a NMR system.
为解决高强度放电(HID)灯采用电子整流器时可能出现的音频共振问题，提出了一种新型的电子整流器电路。
A new type of electronic ballast circuit was proposed to solve the problem of acoustic resonance which may occur in the electronic ballast for high-intensity discharge (HID) lamps.
在纵振型变幅杆等效电路的基础上，研究了三类负载超声变幅杆的共振频率与放大系数。
Based on mechanic equivalent circuit of the longitudinal ultrasonic horn, the resonance frequency and the amplitude magnification coefficient of three kinds of loaded horns are studied.
理论与实验表明，由电感和电容组成的匹配电路，使换能器的共振频率发生了变化。
The theory and the experiment show that the matching circuit composed of an inductor and a capacitor can change the resonant frequency and the effective electromechanical coupling coefficient.
并且给出了计入串联电阻影响后进行电流电压方程参数提取的方法，以便把共振隧穿二极管直流模型加入电路模拟软件中进行电路设计。
In order to add the DC model of RTD into SPICE circuit simulator and design RTD circuits, parameters of current-voltage equation were extracted after considering the effect of series resistance.
为了解决磁共振成像系统中双调谐射频线圈的设计问题，提出了一个通用等效电路模型。
A generalized equivalent circuit model was developed for both single-tuned and double-tuned radio-frequency(RF) coils for Magnetic Resonance Imaging (MRI) systems.
本方法通过观察水模样品的磁共振信号的变化来调正补偿电路的时间常数和增益。
The method adjusts time constant and gain of compensation-circuits with determining change of magnetic resonance signal of phantom.
该算法为共振隧穿二极管的电路设计提供一种新方法。
Proposed algorithm provides a method for circuit design of resonant tunneling diode.
本文介绍了核磁共振的原理及小型核磁共振系统电路部分的设计。
With a view to this, a digital receiver for nuclear magnetic resonance.
电机控制，精确发送的脉冲微调天线的共振点的火车上的直流电压由PWM电路。
The motor is controlled by a PWM circuit that precisely sends DC voltage on a train of pulses for fine tuning the antenna to the resonance point.
此外本文参照高频电路的设计特点，分析了低场磁共振信号放大电路的噪声干扰来源，给出了一些减少噪声干扰的具体措施。
By imitating of the design characters of the high frequency circuit, the origin and the classification of the noise interferences of the low field NMR circuit system are analyzed.
对串联共振型DC DC变换器主电路的构成原理，电路拓扑和存在的工作模式进行了详细的分析讨论。
A detailed analysis is made about the series resonant DC DC converter on such matters as the composition principle of the main circuit, the circuit topology and existing state sequence.
具有共振直流环节的电压型逆变器是在传统的PWM硬件开关电路上加一个共振环节，构成高频、无开关损耗电压型逆变器。
Adding a resonance link to the traditional PWM inflexible switching circuit, a voltage-source inverter of high frequency and no switching less was formed.
众所周知，当一个过程具有共振态、积分电路及不稳定设备传递函数的特点时，同样很难得到较好的闭环步进回应。
Also, it is well known that it is difficult to get good closed-loop step responses for processes with resonances, integrators and unstable plant transfer functions.
分析并设计了基于共振隧穿二极管的振荡电路、矢量水声传感器物理结构以及制作工艺，讨论了传感器信号处理方法。
The RTD oscillator, physical structures and fabrication process of vector hydrophone are designed, and the signal processing has been discussed.
分析并设计了基于共振隧穿二极管的振荡电路、矢量水声传感器物理结构以及制作工艺，讨论了传感器信号处理方法。
The RTD oscillator, physical structures and fabrication process of vector hydrophone are designed, and the signal processing has been discussed.
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