如果只有一种脉冲——两种的其中一种——与硅条产生共振,硅条只能停留于振动的状态。
If just one of the pulses - or neither of them - resonates with the strip then it remains in its existing vibrational state.
两天后,功能磁共振成像扫描显示了用手指完成任务时他们视觉皮质活动的脉冲,甚至是他们听到声调或单词时的脉冲。
After as few as two days, fMRI scans showed bursts of activity in their visual cortex when they performed tasks with their fingers, or even when they listened to tones or words.
为了分析大脑如何对不同牙齿的痛疼作出反应,研究人员利用功能磁共振成像监视上牙或下牙在受到脉冲刺激时的活动。
To see how the brain responds to pain emanating from different teeth, the researchers used fMRI to monitor changes in activity when the upper tooth or the lower tooth was zapped.
研究含有高斯白噪声的周期脉冲信号,通过阈值系统后的随机共振特性。
It is investigated that the characteristics of stochastic resonance of the periodic pulse signal added Gaussian white noise through a threshold system.
我们研究了在强近共振激光脉冲驱动下,二能级原子对不同频率的试探脉冲的瞬态反应。
Transient responses of two-level atoms to a probe pulses with different frequencies have been studied in the presence of near-resonant laser driven pulse.
通过严格求解麦克斯韦—布洛赫方程,研究了超短脉冲激光与硝基苯胺分子材料的非共振相互作用。
We theoretically investigate the non-resonant interaction between ultrashort pulse laser and para-nitroaniline molecule medium by solving the full Maxwell-Bloch equations without approximation.
用脉冲可调谐染料激光共振激励火焰中的钠原子。
Sodium atoms in flame can be resonantly excited by pulsed tunable dye laser.
用三台可调谐脉冲染料激光器三步共振电离方法,测量了铀原子在电离限附近的能级。
A large number of levels of atomic uranium near the ionization limit have been studied using three-step resonant ionization method with three pulsed tunable dye lasers.
介绍了拟脉冲激励及其共振响应技术。
This paper introduces the technology of quasi-impulse and syntony response.
当CP脉冲为低频时,各相绕组平均电压和平均电流较低,电动机磁场储能较少,一定程度上克服了共振现象。
When the frequency of CP pulses is lower, average voltages and currents of windings will decrease and magnetic field energy of motor is very little so as not to produce resonance.
用多模相干态描述光场,应用预解算符和投影算符推导演化算符,使本方法可统一处理锁模激光脉冲序列输出及原子的共振多光子过程。
This method can be used to describe the resonant multi-photon processes that the pulse train from the mode locked laser interacting with atoms.
本文提出的旋转回波脉冲序列具有激发带宽适中,实验参数调整简单的特点,可广泛应用于固体样品的核磁共振谱测量中。
A pulse sequence, namely rotary echo, with modest excitation bandwidth and mere adjustment of the experimental parameters is proposed in the present article.
图像处理器(62)根据由具有不同的加权的所述至少两组RF脉冲诱发的共振计算电容率图。
An image processor (62) computes electric permittivity maps from resonance induced by the at least two sets of RF pulses with different weighting.
脉冲射流水力共振系统各参数的优化组合是提高射流功效的关键因素之一。
The optimized combination of parameters of pulsed jet hydraulic resonance system is a key factor to improve the efficacy of pulsed jet.
本文采用半经典理论方法研究了在短脉冲作用下,被共振微波场驱动的三能级原子极化强度振幅和粒子数差随时间的变化。
The Polarization and Population difference of the three-level atom, driven bya microwave field and interacted by a strong short laser pulse, is studied by me-ans of semiclassical theory in the paper.
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.
对共振和非共振情形下尾波场效应与相对论效应对强激光脉冲在稀薄等离子体中传输的影响作了详细比较。
The relativistic effect and wakefield effect on the propagation of an intense laser pulse in plasma are compared in the resonant and non-resonant cases in detail.
提出了一种可以提高核磁共振测井测量速度的新型测量脉冲序列,它基于对原有CPMG测量脉冲序列的改进。
A new pulse sequence for the measurement of NMR logging is proposed in this article, based on the improvement of original CPMG pulse sequence.
提出了使用导管-气室系统引发水力共振,提高脉冲水射流的强度的设想。
Bring up an assumption that using the pipe-air chamber system to induce hydraulic resonance and improve the strength of pulsed jet.
实验研究证明,利用水力共振提高脉冲水射流的强度是可行的,且存在最佳气室容积和最佳频率。
Experiment study proved that using the hydraulic resonance to improve strength of pulsed jet is available, and the system have a best air-chamber volume and a best frequency.
针对目前高校核磁共振实验开设现状的不足之处,提出了一种综合了连续和脉冲核磁共振实验结合的实验设计。
In this paper, we put forward an experiment design that can integrate continuous and pulse NMR image because of the deficiency of NMR experiment in the present university.
给出一种用于核磁共振谱仪的脉冲场梯度单元的详细设计。
The design of a pulsed field gradient unit for USES on NMR spectrometers is discussed.
梯度放大器是核磁共振成像(MRI)系统的核心设备之一,它根据前级控制系统传来的指令,向梯度线圈提供特定波形的电流脉冲。
The gradient amplifier is an essential equipment of Magnetic Resonance Imaging system (MRI). It supplies the gradient coils with pulse currents according to the signal from the control system.
本文提出了一种实用可靠、经济简单的低场核磁共振系统的脉冲功率激励源设计方案。
Design of a pulsed power source in the low field nuclear magnet resonance (NMR) system with the advantages of practicality, reliability, economy and simplicity is proposed in this paper.
我们用缀饰模型研究强近共振激光脉冲驱动下二能级系统与弱试探脉冲的相互作用。
The interaction between a weak probe laser pulse and a two-level system strongly driven by a near-resonant laser pulse is studied by dressed model.
磁共振中的信号根据所用脉冲的顺序以及所要成像组织的类型分为高信号或第信号(亮或者暗)。
Signal in Mr Images is high or low (bright or dark), depending on the pulse sequence used, and the type of tissue in the image region of interest.
研究了采用低场脉冲核磁共振(nmr)测定二醋酸纤维素丝束油剂的新方法,给出nmr法测定二醋酸纤维素丝束油剂含量的标准曲线。
A new method of low-field pulsed nuclear magnetic resonance (NMR) spectroscopy for the determination of spin finish in cellulose acetate tow was investigated.
完成了核磁共振实验中基本量子逻辑门的脉冲序列,并通过对一些具体算法的操作验证了我们所设计的脉冲序列。
Achieving the pulse sequences to realize the basic logical operations in experiments using NMR techniques, and also tested them by realizing some quantum algorithms.
本文介绍了对ROESY (CAMELSPIN)技术改进的脉冲序列的原理。这种改进的技术能有效的抑制偏共振效应的影响和提高谱的灵敏度。
The principle of pulse sequences of improved ROESY (CAMELSPIN) to suppress the off-resonance effects and increase the sensitivity of spectra were introduced.
本文介绍了对ROESY (CAMELSPIN)技术改进的脉冲序列的原理。这种改进的技术能有效的抑制偏共振效应的影响和提高谱的灵敏度。
The principle of pulse sequences of improved ROESY (CAMELSPIN) to suppress the off-resonance effects and increase the sensitivity of spectra were introduced.
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