“ecological degradation”的概念、定义、翻译、参考文献-科学参考

单词	ecological degradation
释义	ecological degradation Encyclopedia 工学生态退化释 ecological degradation生态退化在一定的时空背景下，在自然因素、人为因素或二者共同作用下，导致生态要素和生态系统发生的不利于人类和生物生存的量变和质变的过程或结果。
随便看	second countability axiom second countable space second countable topological space second Cousin problem Second creation second critical magnetic field second cultivated machinery second curvature second demographic transition second derivative second derivative test second derivative test discriminant second development second difference second differential second differential parameter second differentiator second distance second dual second dual module second dual space second economics adjustment of China second eigenfunction second electron emission Second Emperor of Qin Dynasty

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。