electronasty倾电性electronn.电子electron collision frequency电子碰撞频率electron optical enlargement电子光学放大electron-meson interaction电子-介子相互作用Electron gun CAD of Gyrotron回旋管电子枪CADelectron beam image repeater电子束步进重复照相机electron projection printing电子投影印刷法electron probe microanalyzer微量分析器,电子探针显微分析仪Electron beam scanning width束扫描宽度Electron localization effect电子局域效应electron channelling pattern电子沟道图