短語詞組短語water resources availability index 水資源可利用量指數(shù)irrigation water availability 灌溉水利用系數(shù)green water availability 綠水資源消耗效用soil water availability 土壤水分有效性water availability in canal 渠道水利用系數(shù)nutrient and water availability 水分養(yǎng)分有效性water availability of canal system 渠系水利用系數(shù)availability of water 不同速效水 返回 water availability