“population density”的概念、定义、翻译、参考文献-科学参考

单词	population density
释义	population density [´päp·yǝ`lā·shǝn `den·sǝd·ē] ^ECOLOGY The size of the population within a particular unit of space.
随便看	upper-level winds upper limb upper low upper mantle Upper Mississippian upper mixing layer Upper Ordovician Upper Pennsylvanian Upper Permian upper punch upper ridge upper semicontinuous decomposition upper semicontinuous function upper sideband Upper Silurian upper transit Upper Triassic upper trough upper winds up quark upright uprush UPS upset upsetted moraine

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。