electric dipole moment

例句：

1. 1. The electron has a very small electric dipole moment.
   电子具有非常小的电偶极矩。
2. 2.The electric field around the charged particle is due to its electric dipole moment.
   带电粒子周围的电场是由于它的电偶极矩引起的。
3. 3. In the context of quantum mechanics, the electric dipole moment is used to describe the polarization of matter.
   在量子力学的背景下，电偶极矩被用来描述物质的极化。