“2:1”的概念、定义、翻译、参考文献-科学参考

科学参考收录了5291条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。

单词	2:1
释义	2:1
随便看	NTIA NT (Network Termination) NTSC (National Television Standards Committee) null null modem numbering plan administration (NPA) Numbering Plan Area (NPA) number portability Number Portability Administration Center (NPAC) Numbers numerical aperture (NA) NXX NXX NXX Nyquist, Harry (1889–1976) Nyquist theorem NZDF (Non Zero Dispersion-Shifted Fiber) O OADM (Optical Add/Drop Multiplexer) OAM&P (Operations, Administration, Management, and Provisioning) O&M (Operations and Maintenance) O-Band (Original Band) oblique OBRA 93 obsessive compulsive disorder (OCD)