positive variation是什么意思

用法例句

By utilizing the unitary transformation such as the rotational transformation in Schwinger angular momentum representation,Bogoliubov transformation and the squeezed transformation,the two-body interacting Hamiltonian in the form of H∧_k=A_1a~+_ka_k+A_2b~+_kb_k+(Ba~+_kb~+_k+B~*a_kb_k)+(Ca~+_kb_k+C~*b~+_ka_k)is diagonalized.

利用Schwinger角动量表象的转动变换,玻戈留玻夫变换,压缩变换等幺正变换,对∧Hk=A1ak+ak+A2bk+bk+(Bak+bk++B*akbk)+(Cak+bk+C*bk+ak)形式磁有序物质的二体耦合哈密顿量进行了对角化。

The Hamiltonian of the system was diagonalized by unitary transformation to obtain the eigenenergy spectra of the circuit.

通过幺正变换将系统的哈密顿量对角化,给出体系的本征能谱。

We find that when the channels are nonmaximally (entangled) states by introducing an ancillary qubit and constructing an unitary transformation properly,teleportation of two-particle entangled state can be implemented with certain probability.

发现在使用非最大纠缠态作为量子通道时,通过引进一个辅助粒子,并构造一个幺正变换矩阵,即可以一定的几率完成二粒子纠缠态的隐形传输。

The characteristic field and velocity field of plane stress problem for the orthotropic materials are studied by the R.

Ｈｉｌｌ屈服准则研究了正变异性材料平面应力问题的应力场及速度场，得到了应力场与速度场的特征线处处重合的结果。

Starting from the classical motion equation of a domain wall in the ferromagnetic system, the analytic wavefunction was obtained by using canonical quantization method and unitary transformation.

从铁磁畴的能量方程出发 ,利用正则量子化方法和么正变换技术 ,解析地求得了磁畴量子化运动的波函数 。

It can not eliminate through the unitary transformation or the re\|definition of the wave function.

评述并证明了在场强为零势不为零的复连通区域 ,规范势沿入射粒子运动闭合路径的不可积积分是贝里几何位相 ,通过么正变换或重新定义波函数不能除去