electronic book电子书籍electronicadj.电子的；电子学的Electronic Installation Change and Maintenance电子装备更改与维修electronic document security management system电子文档安全管理系统Electronically-Controlled Telephone Exchange电子控制电话交换机Electronic and economization technique area.节能技术领域。Electronic Combat Software Research Laboratory电子作战软件研究所Electronic Telecommunications Switching System电子电信转换系统Electronic Reconnaissance Procurement Division电子侦察器材采购处Electronic Government and Executive Management电子政务与行政管理electronic paramagnetic resonance spectrometer电子顺磁共振波谱仪electronic numerical integrator and calculator电子数字积分计算机