“natural ecosystem”的概念、定义、翻译、参考文献-科学参考

单词	natural ecosystem
释义	natural ecosystem Encyclopedia 理学自然生态系统释 natural ecosystem自然生态系统没有或很少受到人类活动直接干扰，依靠自然能力维持的相对稳定的生态系统。分为陆地生态系统和水域生态系统。
随便看	media management media market analysis media marketing segmentation media market penetrability strategy media market pioneering strategy media market positioning media market research media monitoring media morphosis theory Media Museum at Communication University of China median median absolute deviation median age median citation age median control chart Median effective dose median effective dose median eminence median envelope median error median filter median lethal concentration median lethal concentration for fishery organisms median lethal dose median lethal dose (LD_{50})

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。