electronasty倾电性electronn.电子electron phonon interaction电子声子相互酌electron acceptable monomer电子接受性单体electron-stream amplifier电子流放大器electron pair approximation电子对近似electron-exchange polymer电子交换聚合物electroneutrality condition电中性条件electron bombardment engine电子轰击式发动机electronegative double bond负电性双键electron transit time error电子渡越时间误差Electron Cyclotron Emission电子回旋辐射