“National Science Digital Library of American”的概念、定义、翻译、参考文献-科学参考

单词	National Science Digital Library of American
释义	National Science Digital Library of American Encyclopedia 管理学数字保存项目释 National Science Digital Library of American; NSDL美国国家科学数字图书馆由美国国家科学基金会（NSF）创建的，对科学、技术、工程和数学（STEM）的高质量数字资源进行有效组织并提供服务的示范性数字图书馆。
随便看	parabolic pencil parabolic pencil of circles parabolic pencil of lines parabolic pencil of rays parabolic pencil of spheres parabolic perspectivity parabolic plane parabolic point parabolic potential parabolic quadratic hypersurface parabolic quadratic surface parabolic radio telescope parabolic ray parabolic reflector parabolic refractive index optical fiber parabolic region parabolic regression parabolic Riemann surface parabolic ring cyclide parabolic rotation parabolic rule parabolic sector parabolic segment parabolic sheaf parabolic simply connected domain

科学参考收录了854744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。