“duty of water”的概念、定义、翻译、参考文献-科学参考

单词	duty of water
释义	duty of water [`düd·ē ǝv `wȯd·ǝr] ^HYDROLOGY The total volume of irrigation water required to mature a particular type of crop, including consumptive use, evaporation and seepage from ditches and canals, and the water eventually returned to streams by percolation and surface runoff.
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