同义词
1)lowest stage;lowest water level；gulder；minimum water level,minimum pool level,最低水位2)lowest water level forecast,最低水位预测3)absolute minimum,absolute minimum stage,绝对最低水位4)lowest possible low water,可能最低水位5)lowest recorded stage,实测最低水位6)the method of low-water-level frequency accumulating,日最低水位累积频率法
