“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。
随便看	beam riding guidance beam scanning beam shaping beam smoothing beams of cable-stayed bridges beam solid angle beam splitter beamsplitter beam splitting prism beam spot beam stabilization beam steering beam string structure beam supporting hip-and-gable roof structures beam switching beam technology for material modification beam thermal velocity beam trawler beam tube beam waist Beam Warming scheme Beam-Warming scheme beam waveguide beam-wave interaction beam width

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