“birth rate”的概念、定义、翻译、参考文献-科学参考

单词	birth rate
释义	birth rate [`bǝrth ´rāt] ^BIOLOGY The ratio between the number of live births and a specified number of people in a population over a given period of time.
随便看	quantum detector quantum discontinuity quantum efficiency quantum electrodynamics quantum electronics quantum evolution quantum field theory quantum gravitation quantum gravity quantum Hall effect quantum hydrodynamics quantum hypothesis quantumization distortion quantumization noise quantum jump quantum limit quantum-mechanical operator quantum mechanics quantum mineralogy quantum nondemolition measurement quantum number quantum of action quantum solid quantum state quantum statistics

科学参考收录了103327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。