“subject classification”的概念、定义、翻译、参考文献-科学参考

单词	subject classification
释义	subject classification Encyclopedia 管理学档案分类方法释 subject classification问题分类法以档案内容所反映的主要问题（主题、事由）作为分类标准，将全宗内档案分为若干类别的方法。又称主题分类法、事由分类法。
随便看	positive endomorphism positive energy positive-energy representation positive energy states positive energy theorem positive energy wave positive entropy positive excess coefficient positive existential sentence positive extension positive eyepiece positive feedback positive feedback amplifier positive film positive flower structure positive formula positive function positive functional positive fundamental sequence positive glow positive Grassmannian positive half-trajectory positive helicity spinors positive Hermitian kernel positive Hermitian operator

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。