“人口地图”的概念、定义、翻译、参考文献-科学参考

单词	人口地图
释义	人口地图 Encyclopedia 理学人口地图释 population map人口地图反映人口的自然、社会和人文特征及其分布规律（如人口分布、人口密度、人口构成、人口变动）等状况的专题地图。
随便看	negative channel metal-oxide-semiconductor circuit negative channel metal-oxide-semiconductor integrated circuit negative charge negative complex negative compressibility effect negative conductance amplifier negative control negative correlation negative crystal negative curvature negative curvature direction negative curvature manifold negative cycle negative definite negative definite form negative definite function negative definite kernel negative definite matrix negative definiteness negative definite operator negative definite quadratic form negative deviation Negative Dialectics negative difference between purchasing and marketing prices negative differential conductivity

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。