National Research Register国家研究登记 Noise Reduction Rating噪音减弱等级,降低噪声级 Nuclear Reactor Regulation核反应堆的规定 National Recording Registry全国记录登记 No Response Required没有回应 Nuclear Regulatory Research核能管理研究 Nonunit Related RecordNonunit相关的记录 Office of Nuclear Reactor Regulation办公室的核反应堆的规定 Nascom Reconfiguration RequestNascom重构的要求 Net Run Rate (cricket)网络运行速度(板球) Non Repudiation of Receipt (electronic commerce)非拒付的收据(电子商务) Network Requirements Review (acquisition process)网络要求评论(采购过程) Non-Recurring Revenue到税务局 Naval Research Requirement海军的研究需求 Navy Research Requirements海军的研究需求