Standards Developing/Development Organization标准的发展和发展机构 Stamp Distribution Office (US Postal Service)邮票分布办公室(美国邮政服务) System Development Operations系统开发业务 Solar Dynamics Observatory (satellite)太阳能动力天文台(卫星) Scheduled Day Off计划休假 Software Delivery Optimization (Borland)火鸟,优化软件交货 Sudden Death Overtime加时赛 Staff Development Officer职员发展员 Serial Data Output串行数据输出 Saldo了 Super Distributed Object超级分布式对象技术 Signed Data Object数据对象签署 Speedometer Drive Output驱动器输出计 Scheda Dimissione Ospedaliera (Italian)Scheda Dimissione Ospedaliera(意大利) Staff Duty Officer员工当班人员