Emission (s) Factor发射(s)的因素 environmental forecasting环境预报 economic feasibility经济可行性 Exchange Fund外汇基金 Expeditionary Force远征军 Encrypting File system加密文件系统 Effective Factor效率因数 Elementary Function基本功能 Error Factor误差因子 Expedited-Forwarding加速转发 Environment Fund环境基金 Effective Fire有效射击 Early Finish date最早完成日期 export finance出口融资 External Frequency外频