“hydrological return period”的概念、定义、翻译、参考文献-科学参考

单词	hydrological return period
释义	hydrological return period Encyclopedia 工学水文统计释 hydrological return period水文重现期等于及大于（或等于及小于）一定量级的水文要素出现一次的平均间隔年数。
随便看	exist existence Existence and Existents existence and non-existence existence and non-existence grow out of each other existence and uniqueness theorem existence axiom existence condition existence criterion existence domain existence factors existence form of element existence limit of nucleus existence of best approximation existence of lift existence of required elements of crime existence precedes essence existence principle existence problem existence proof existence property existence region existence symbol existence theorem existence theorem for roots

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