Nederlandse Standaard Tarief Documentatie (Dutch: Netherlands Standard Rate Documentation)Nederlandse Standaard Tarief Documentatie(荷兰:荷兰标准文件) Network Service Technology Development (Sprint)网络服务技术开发冲刺 Nonsystem Training DevicesNonsystem训练装置 No Stranger to Debate不陌生的争论 New Systems Training Division新系统的培训师 Non-System Training Devices同时训练装置