分离常数 meaning in English

dissociation constant
separation constant

For the scattering field caused by the finite - length conducting and permeable cylinder , the boundary condition that the normal component of electrical strength is zero in conducting medium , i . e . en = 0 , was used to determine the separation constant of boundary value problem in the past
以往含有有限长导电导磁圆柱体散射场的求解，大都根据导电媒质中电场强度法向分量为零，即e _ n = 0 ，这一边界条件来确定边值问题中分离常数的取值。