NonDelivery Diagnostic不投送诊断 Norton Disk Doctor诺顿磁盘医生 No Designated Driver没有指定的司机 National Diploma in Dairying (UK)全国毕业于乳品(英国) Norton Disk Doctor (Norton Utilities)诺顿磁盘医生(诺顿设施) National Distribution Division国家分布 Network Demarcation Device网络标定装置 Non-Decision Directed (digital communications)并非决定直接数字通信 Non-coherent Differential DetectionNon-coherent鉴别检测 Next Duty Day每天下义务 Non-Linear Data Directed非线性数据 Next-Day DeliveryNext-Day交货 Non-Decreasing DifferencesNon-Decreasing差异 Non-Dimensional Data无因次数据 Non-Dimensional Drawing无因次图