X射线单色仪定向
X ray monochrometer orientation
无线电电子学与电视机制造商联合会
RETMA Radio Electronics and Television Manufacturers Association
电子电子表格软件
electronic spreadsheet software
electronic spreadsheet package
电子-电子交互作用
electron-electron interaction
电子-电子散射
electron electron scattering
electron-electron scattering
电子-电子相互作用
electron-electron interacton
electron electron interactions
electron-electron interaction