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- tangent vector fields 切矢量域
- tangent vector field 切向量场
- The purely kinematical equation for the tangent vector of a line element is derived. 导出了线元切向量的变形方程以及拉伸轴在极射赤面投影图上位置变化计算公式。
- During calculation of the tangent vector, the complete Jacobian matrix is adopted so that the tangent vector is computed accurately. 该方法在切向量求取环节,采用完整的雅可比矩阵做系数矩阵求取切向量,从而保证切向量的准确性;
- We shall use various schemes, none of them wholly satisfactory, to depict vector fields in this book. 在本书中我将用不同的图样画出矢量场,但没有一种是完全令人满意的。
- As an analogue of the three vector fields the fundamental vector fields of DN manifolds preserve the DN structures. DN流形上的基本向量场做为上述三种向量场的类似物,它保持DN结构,但由于DN结构较为复杂,因而保持DN结构这一特点的表述也相应地比较复杂。
- Streamline technique is employed at large in the visualization of CFD vector fields. 摘要流线可视化技术是普遍采用的CFD矢量场可视化工具。
- In the case of a vector field causing a particular term in the SME equations, the orientation coincides with the direction of the vector field. 若向量场造成SME方程式中一个特别项,则时空的方向会与向量场的方向一致。
- The local and global bifurcations of a Z 2-equivariant perturbed polynomial Hamiltonian plane polynomial vector fields of degree 5 are considered. 研究了一类具有Z2-等变性的5次平面多项式向量场的全局与局部分叉。
- The guidance vector field can be procedurally generated, or computed from 3D medical images. 方向场可由过程式方法生成,也可由三维医学数据处理而得。
- Based on the critical poin t theory , this paperuses theeigenvector method to automatically looking for the vortex core in 3D discrete vector fields. 基于临界点理论,使用特征矢量方法在三维离散矢量场中进行了涡核寻找的研究。
- An object recognition and localization algorithm based on local feature?turning angle between neighbouring tangent vectors, is presented. 提出了基于切矢转角局部特征的目标识别与定位算法。
- EOF, EOF procedures, principal component analysis procedure, suitable for vector field orthogonal decomposition. 经验正交函数,EOF程序,主成分分析程序,适合做向量场的正交分解。
- Based on the critical point theory , this paper uses the eigenvector method to automatically looking for the vortex core in 3D discrete vector fields. 基于临界点理论,使用特征矢量方法在三维离散矢量场中进行了涡核寻找的研究。
- The electric current density vector field also satisfies superposition principle, some applications thereof are introduced. 摘要电流密度矢量场也满足叠加原理,给出了一些应用电流密度场叠加原理的例子。
- Gravitational field is a kind of vector field, and the description of gravitational force by general relativity is very effective. 引力场是一种矢量场,广义相对论对引力问题的描述是非常有效的。
- Based on Kirov's Theorem,applying many-knot spline functions,one kind of curve or surface modeling method with tangent vectors or normal vectors,by which some local shapes of curves or surfaces can be controlled,has been introduced. 基于Kirov定理,利用多结点样条函数,研究一类带有可控参数的曲线曲面造型方法。
- First, an arbitrary timelike vector field can be interpreted as defining the world lines of some family of (possibly noninertial) ideal observers. 然而,爱因斯坦场方程式对于一时空模型中,物质或非重力力场的哪些状态是被许可的并不太拣选。
- If you are up to it, you can derive the proper equation yourself by solving the calculus differential equation for a curve with a constant angle between the radial and tangent vectors (HUH?). 通过解一个微积分等式:曲线的射线与切线形成的角度是恒量,可以自己得出正确的方程式。
- First, base surface is separated from geometric details by using the Poisson equation and a displacement vector field is obtained. 首先利用低通滤波和泊松方程对源曲面上特征区域进行基面与细节特征的分离操作,求得基面与特征之间的偏移矢量场;