multipole expansion

基本解释

This paper deals with multipole moment expansion of the magnetic vector potential in linear anisotropic media.
本文给出在线性各向异性介质中磁向量势（?）
By comparison with ANSYS, it was clear that BEM could solve the problem not only effectively but also precisely. In chapter 3, the theory of Multipole Expansion Method is introduced.
第3 章着重介绍了多极展开法的基本理论知识，为多极展开法与边界元法的结合奠定理论基础。
The three-dimensional boundary element method for elastic materials was extended to develop a fast multipole expansion formulation of the fundamental solutions for quadratic elements.
在三维弹性力学边界元法的基础上，推导出二阶单元的基本解快速多极展开格式。