Network Security Division网络安全的分裂 National Surveillance of Dialysis-Associated Diseases in US.国家监视的Dialysis-Associated疾病在美国 Network Services Division网络服务 No Significant Deviation无重大偏差 Norton System Doctor诺顿系统医生 New Service Development新服务的发展 Network System Development网络系统的开发 Network Solutions Development网络解决方案的发展 Nuclear Services Department核服务部门 Natural Spoken Dialog自然口语对话框 No Significant Disease无明显疾病 Navy Support Date海军支援的日期 Network Service Definition网络服务的定义 Nassi-Shneiderman DiagramNassi-Shneiderman图 Nairobi Sheep Disease内罗毕羊病