查询词典 impedance

Magnetic resonance electrical impedance tomography is a new imaging modality to obtain the static or dynamic conductivity distribution of subject.

中文摘要磁共振电阻抗成像是一种能够获得成像体内部静态或者动态电导率分布的新型成像方式。

Non-Contact Magnetic Resonance Electrical Impedance Tomography (non-contact MREIT), which is the combination of Magnetic Induction Tomography and Magnetic Resonance Imaging, is a new functional imaging method.

中文摘要非接触磁共振电阻抗成像方法是一种把磁感应技术与磁共振成像相结合的新的成像方法。

It is very difficult to write an original program when the solved problems have the complicated boundary or determining conditions, for example the direct problem of Magnetic Resonance Electrical Impedance Tomography.

实际计算中，当偏微分方程定解问题的定义域是复杂几何形状或有复杂定解条件时，直接编写有限元原始程序具有相当难度，例如计算磁共振电阻抗成像技术中的正问题。

The present magnetic resonance electrical impedance tomography method can only be used in MRI systems in which the main magnetic fields are parallel to the horizontal plane. In this paper, a new MREIT method with currents injected from an oblique plane is proposed. It can be used on MRI scanners with either permanent magnet or superconductive magnet.

现有的磁共振电阻抗成像方法只适用于主磁场平行水平面的磁共振系统，本文中提出了一种新的MREIT方法即斜位电流注入磁共振电阻抗成像，同时适用于主磁场垂直于水平面的磁共振系统。

Magnetic Resonance Electrical Impedance Tomography; Current Density Imaging; Radial Basis Function.

阻抗成像，电流密度成像，径向基函数，表面响应模型，电导率

Key words:magnetic resonance electrical impedance tomography;magnetic flux density measurement; radius basic function;neural network;genetic algorithm

作者单位：浙江大学电气工程学院，浙江杭州 310027 核磁共振电阻抗成像；磁感应强度测量；径向基函数；神经网络；遗传算法

Impedance transformer is one kind of main equipment of track circuit in electrification district.

扼流变压器是电化区段构成轨道电路的主要设备之一。

The equivalent circuit model of electrobath is obtained by the methods of electrochemical impedance spectroscopy and curve fitting.

基于电化学原理描述了双电层电容的产生及其影响，通过采用电化学阻抗谱方法和测量阶跃响应曲线并进行参数拟合的方法，建立了电解槽负载的等效电路模型。

The conductivity of the membrane was measured by AC impedance method ,it was showed that the conductivity of the membrane prepared by electrodeposit method could get up to 10 -2 S/cm,the denseness of the membrane was investigated with a lab made negative pressure system,and it was found that the permeability of the membrane decreased by over 95% in the case of ca 2% phosphate deposit.

采用电化学沉积法和溶胶凝胶法制备了一种磷酸盐无机质子传导膜，交流阻抗法测得电化学沉积法制得的膜的电导率可达 10 -2 S/cm ，负压渗透系统研究膜的密实性表明：在磷酸盐沉积量为 2 %左右时，膜的透过性可降低 95 %以上。

The applications of electrochemical impedance spectroscopy to the research of electrodeposition of various metals and alloys were introduced.

介绍了电化学阻抗谱在各种金属及合金的电沉积研究中的应用。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。