“life expectancy”的概念、定义、翻译、参考文献-科学参考

单词	life expectancy
释义	life expectancy Encyclopedia 理学生命期望释 life expectancy生命期望种群中某一特定年龄的个体在未来所能存活的平均时间。又称期望寿命、平均寿命。
随便看	integral-differential operator integral direct sum integral divisor integral domain integral drawing integral element integral element over R integral equation integral equation method integral equation Neumann series integral equation of convolution type integral equation of Fredholm type integral equation of Volterra type integral equation theory integral erection method integral exponent integral exponential function integral expression integral extension integral extension of a ring integral factor integral fast reactor integral field spectrograph integral field unit integral filtration

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。