Ready For Service准备开通业务，准备好服务 Remote File Sharing远程文件共享 Request For Service请求服务 Remote File Server远程文件服务站 Recursive Frequency Splitting递归的频率分裂 Request For Sample要求的样品 Rust Federal Services, Inc.联邦服务公司锈 Renewable Fuels Standard可再生能源的标准 River Forecast System (NOAA)河预报系统(NOAA) Reference Flight System参考飞行系统 Regardless of Feature Size (ANSI Y14.5M engineering drawings & related documentation practices)无论特徵尺寸(ANSI Y14.5M工程图纸及相关的文件操作) Remote File System远程文件系统 Registered Financial Specialist注册金融专家 Referred in the Senate (bill status)在参议院(比尔状态) Regardless of Feature Size (geometric dimensioning and tolerancing)不论大小的特征的几何尺寸和公差的