Each Reader's Digest condensed book is an abbreviation of an originally longer work.《读者文摘》都是较长原著的缩写本。The substance of their talk is condensed into a paragraph.他们谈话的要旨被压缩成一段话.The English translation may have been con...
For a system, Hamiltonian is invariant under any translation of spatial coordinates.对于一体系, 哈密算符在任何空间坐标变换下是不变的.Aim The Hamiltonian is transformed from Pauli matrices to Hubbard operators.目的把用Pauli矩阵表示的哈密顿量转化成用Hubbard算符表示....