查询词典 contraction of tensor

The SNR of DTI data is relatively low, which degrades the quality of visualized tensor field data.

由于DTI数据的信噪比较低，会影响张量场数据可视化的效果。

The existent form of pure gravitational field part of matter result in an energy-momentum tensor in gravitational field, which should belong to a part of dark matter because of it can not directly be observed .

以纯引力场形式存在的物质是不能被直接观察到的，因此这部分物质应属于暗物质的一种。

The comparison of objective results and subjective evaluation of the filtered images indicate that the proposed filtering method can effectively remove noise and keep tensor field details unchanged.

客观结果比较和滤波图像的主观评估表明：该滤波方法可在保持张量场细节不变的同时有效地消除噪声，是磁共振扩散张量场的一种有价值的滤波工具。

The electromagnetic field tensor method is used to calculate the electromagnetic fields inside a parallel-plate simulator and analytical expressions for the field distributions are derived in time domain.

利用电磁场张量法计算了平行板电磁脉冲模拟器内的电磁场并推导了其时域解析表达式。

From the formula for the field strength of a point charge,by means of the transformation of the field strength tensor in the special theory of relativity,the laws of electrostatic field and magnetic field of steady current s are derived in this paper to give the students a better understanding of the consistency of electric field and magnetic field.

从点电荷的场强公式出发，根据狭义相对论中场强张量的变换，推导出了静电场和稳恒电流磁场的诸定律，使学生对电场和磁场的统一性有了更为深刻的认识。

In order to eliminate the effect of noise, wavelet-based denoising technique was used both on diffusion weighted images and noisy tensor field. We also compared the wavelet-based denoising method with the Gaussian smoothing, the traditional denoising method in image analysis.

为降低图像噪声对纤维跟踪的影响，分别采用小波去噪方法对扩散加权图像和张量场进行处理，并对小波去噪和传统的高斯平滑方法在扩散加权图像噪声抑制方面的作用进行了比较。

Theorem 3: the gradient of any point in the locus of foot point of the perpendicular line and the tangent line of the cylindrical spiral is , namely one-order tensor field.

定理3 由坐标原点至圆柱螺线的切线所引垂线的垂足轨迹上任一点的梯度为，即为一个一阶张量场。

By introducing the SU(2) field strength tensor, we can easily obtain the spin force which reduces to the Stern-Gerlach force.

当只有U(1)电磁场时，该自旋力会简单地退化为Stern-Gerlach力。

A gravitational field equation that includes the gravitational field contribution is established by introducing the energy-momentum tensor of pure gravitational field part of matter into the general relativity theory of Einstein.

通过引进和构造具有广义协变的纯引力场能量-动量张量并引入到Einstein的场方程中，建立了包含引力场贡献的引力场方程。

Equations in form of tensor for describing fluid dynamics are presented, which are free of coordinates.

本文首先推导得出了不受坐标系限制的张量形式的流体运动学基本方程组。

The Master of Science degree program in Economics features a curriculum that is flexibl...

在经济学理学硕士学位的课程计划的特点是灵活而全面的方法，在理论和应用课程培训工作。

This module is used for constructing and visualizing 3D models.

该模块是用于建设和可视化的三维模型。