为进一步讨论该类型一维系统中不同类型激子的产生、输运、衰减等动态过程，关联强度U的选择提供参考。
The result offered useful reference for the choice of U, in formation, transport and annihilate of different excitons in trans-polyacetylene.
自由电子的运动学由自由狄拉克方程——一个四维系统的偏微微分方程描述。
The kinematics of free electrons is described by the free Dirac equation, a four-dimensional system of partial differential equations.
在传统二维系统中，一般用二维符号来表述。
In traditional 2D system, they are usually showed by 2D symbols.
应用推荐