“考古年代学”的概念、定义、翻译、参考文献-科学参考

单词	考古年代学
释义	考古年代学 Encyclopedia 理学第四纪年代学释 archaeological chronology考古年代学为探索人类起源和进化、人类文明演化过程、人与环境相互关系等历史发展规律构建时间框架的学科。
随便看	nonnegative combination nonnegative definite nonnegative definite kernel nonnegative definite matrix nonnegative definiteness nonnegative definite quadratic estimate non-negative definite quadratic estimator nonnegative divisor nonnegative element nonnegative function nonnegative integer nonnegative integral kernel nonnegative manifold nonnegative matrix non-negative matrix factorization nonnegative measure nonnegative number nonnegative operator nonnegative orthant nonnegative partial sum nonnegative quadratic form nonnegative semi-definite matrix nonnegative solution nonnegative splitting nonnegativity

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。