“干旱”的概念、定义、翻译、参考文献-科学参考

单词	干旱
释义	干旱 Encyclopedia 理学大气水循环释 drought干旱通常指某一区域由于较长时期的降水不足，导致区域内可利用水量发生亏缺，不能满足生态环境和人类的生存及经济活动需求的气候现象。
随便看	positive definite sequence positive definite solution positive definite space positive definite tensor positive definte rational fanction positive deviation positive diffeomorphism positive diffeomorphisms positive differential positive direction positive displacement compressor positive displacement flowmeter positive displacement motor drill positive displacement pump positive displacement sensor positive distinctiveness positive distribution positive divisor positive divisorial ideal positive domain positive drawing positive drive lift positive dromotropic action positive edge positive effect of organizational communication

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。