您要查找的是不是：
- (=axial gradient) 轴梯度，轴倾度 ax. grad.
- (=mitral valve gradient) 二尖瓣(压力)梯度 MV grad.
- 运用广义梯度密度泛函理论(Generalized Gradient Approximation,GGA)的PBE(Perdew-Burke-Ernzerh)方法结合周期性平板模型,研究了氯气分子和氯原子在CuCl(111)表面上的吸附。 The adsorption of Cl_2 molecule on CuCl(111) surface has been studied with periodic slab model by Perdew-Burke-Ernzerh (PBE) approach of the generalized gradient approximation (GGA) within the framework of density functional theory (DFT).
