1) gradient shimming
梯度匀场
1.
A gradient shimming method is presented to promote the homogeneity,and the full width at half maximum(FWHM) of the resonance line is used to measure the effect of gradient shimming.
实验结果表明:半高宽法是判断匀场效果的基本方法,梯度匀场方法在不改变系统硬件的基础上进行主动匀场,匀场效果可以满足一般成像精确度的要求。
2) 2H gradient shim
氘梯度匀场
3) uniform gradient magnetic field
均匀梯度磁场
1.
In order to develop a new tensile strength measurement for granular soil,a uniform gradient magnetic field was designed with Helmholtz coil.
为此用亥姆霍兹线圈构建了一个均匀梯度磁场,将圆柱形试件放入其中,并采用ANSYS有限元程序进行了数值模拟。
4) magnetic field gradient
磁场梯度
1.
The magnetic field gradient of these magnetic field profiles is obtained quantitatively by using Lorentz fit.
为了定量地得到磁场梯度对a Si∶H薄膜沉积速率的影响 ,对单磁场线圈分散场MWECRCVD系统等离子体室和沉积室中用三种方法得到的磁场形貌进行了研究 。
2.
Four single component magnetic field sensors are used to make up of a detection device that has dual-magnetic field gradient inputs as reference.
本文使用 4个单分量磁探头构成双参考磁场梯度探测装置 。
3.
The results show that the product of magnetic flux density and magnetic field gradient should be very large to get good oxygen enrichment results, which is difficult to realize.
通过分析氧、氮分子的运动速率及其在梯度磁场中的受力,从理论上分析计算了磁场参数与富氧效果的关系,计算结果表明,欲达到较好的富氧效果,需要极大的磁感应强度和磁场梯度乘积,这是很难实现的。
5) gradient field
梯度场
1.
Pressure and temperature gradient field are introduced to set up scale location model.
陆梁油田自开发以来结垢问题变得越来越严重,本文应用Oddo-Tomson饱和指数法建立结垢趋势预测模型,并引入压力、温度梯度场建立结垢位置模型,开发出陆梁油田结垢预测软件。
2.
This paper presents a novel method for seam elimination based on image gradient field, briefly called—GFBSE.
提出了一种基于图像梯度场的拼接缝消除方法——GFBSE。
3.
A gradient field of image region to be processed is introduced into general total variation(TV) model, which gives an extended version of TV model called gradient field total variation (GFTV)model.
在一般的整体变分模型中引入待处理区域的梯度场,得到一个扩展的整体变分模型,称为梯度场整体变分(gradient field totalvariation,GFTV)模型。
6) electric field gradient
电场梯度
1.
Electric field gradient on Fe dopants in Y-124 superconductor;
铁掺杂Y－124高温超导相的电场梯度研究
2.
The relationship among the nuclear quadrupole coupling constants (NQCC) , local electric field gradient ( EFG) and bonding structure of pentacrythritol tetranitrate (PETN) were studied by means of ab initio and TOWNES-DAILEY theory.
利用从头算法和TOWNES-DAILEY理论研究了泰安(PETN)分子中氮原子的核四极耦合常数、氮原子近场电场梯度和价键结构的关系。
3.
With the theory of electroelastic solids including electric field gradient effects, an antiplane crack in a piezoelectric body is analyzed.
用含有电场梯度效应的电弹性体理论分析了压电体中的反平面裂纹问题。
补充资料：梯度
分子式：
CAS号：
性质：设体系中某处的物理参数(如温度、速度、浓度等)为w，在与其垂直距离的dy处该参数为w+dw，则称为该物理参数的梯度，也即该物理参数的变化率。如果参数为速度、浓度或温度，则分别称为速度梯度、浓度梯度或温度梯度。
CAS号：
性质：设体系中某处的物理参数(如温度、速度、浓度等)为w，在与其垂直距离的dy处该参数为w+dw，则称为该物理参数的梯度，也即该物理参数的变化率。如果参数为速度、浓度或温度，则分别称为速度梯度、浓度梯度或温度梯度。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条