“drought index”的概念、定义、翻译、参考文献-科学参考

单词	drought index
释义	drought index Encyclopedia 农学干旱指数释 drought index干旱指数表征气候干旱程度的指标。从水分支出与收入对比关系角度描述气候干湿状况，与湿润指数互为倒数。
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