“fertility gradient”的概念、定义、翻译、参考文献-科学参考

单词	fertility gradient
释义	fertility gradient 肥力梯度人口生育梯度
随便看	ultra-hyperbolic ultrahyperbolic differential equation ultrahyperpyrexia ultra-ideal ultrainfinte point ultraintense beam ultraionization potential ultra large crude carrier (ULCC) ultra large crude oil carrier ultra-large type ultra-lattice ultraligation ultra light aircraft ultra light alloy ultra-light alloy ultralimit ultralinear ultra-linear amplifier ultralinear amplifier circuit ultra linearity ultra-long period ultra long spaced electric log ultra-long-spaced electric log(ULSEL) ultra-long spacing electrical log ultra-low birefringence fiber

科学参考收录了1248194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。