electronalog电模拟electronn.电子electron displacement polarization电子位移极化electron-optical image converter电子光学图像转换器electron diffraction investigation电子衍射研究electronmagnetic vibration exciter电磁振荡震源electron-electron bremsstrahlung电子电子韧致辐射Electron density topology analysis电子密度拓扑分析electron-withdrawing substituent吸电子取代基electron beam local heat treatment电子束局部热处理electron beam induced conductivity电子束感应电导率electron-optical cross-section电子光学截面