“NDB”的概念、定义、翻译、参考文献-科学参考

单词	NDB
释义	NDB Encyclopedia 工学无线定位技术释 non directional beacon; NDB无方向信标放置在已知地点，用于航空或者航海方面定位的无线电发射装置。每台无方向信标导航台都有3个字母组成的标识。理学核酸数据库释 nucleic acid database; NDB核酸数据库对含有核酸结构的数据进行处理、存档查询和分配的通用数据库。
随便看	graded form graded free resolution graded group graded heterojunction graded homomorphism graded Hopf algebra graded ideal graded index graded index fiber graded index lens graded index lens, GRIN graded index media graded-index media =graded index 陡度折射率 graded junction graded lattice graded Lie algebra graded manifold graded medical treatment graded module graded morphism graded object graded pn junction graded-polarizable graded projective dimension

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。