Why doesn't it fly apart under the coulomb repulsion of like - charge elements?为什么它不在同类电荷元的库仑排斥作用下散开 呢 ?Exciton is electron - hole pair held together by their mutual Coulomb interaction.激子就是由电子和空穴在相互间的库仑力作用下,相互维持在一起...

coulomb的音标：coulomb的英式发音音标为：['ku:lɒm]coulomb的美式发音音标为：['kulɑm]...

n.库仑（电量单位）...