2) surface water use
地表水利用
3) available water
可利用水量
1.
This article makes an analysis of the variation tendency of the hydrologicalelements of Nansi Lake in the past 40 years, using the tendency rate for quantitative description based on the date of measured rainfall, water gage of the lake calculated flow into the lake, available water, annual water consumptioh etc.
利用实测降水量、水位和计算出的入湖水量、可利用水量、年用水量等资料，分析南四湖近四十年中水文要素的变化趋势，并用倾向率作定量描述。
4) rain runoff total quantity
雨水可利用量
5) available water resources
水资源可利用量
1.
The allocation of water use right based on available water resources,namely water right allocation,belongs to water resources allocation for the programming phase.
这种配置基于水资源量,配置水资源可利用量。
2.
Water pollution caused by human factors leads to the decreasing of available water resources and the function declining of water bodies,like rivers,lakes or reservoirs.
在水资源可利用量的基础上,提出有效水资源可利用量概念,给出计算方法及应用实例,并以水功能区为单元,进行水资源可利用量与有效水资源可利用量的分析。
6) available water resource
可利用水资源量
1.
Results show that the annual trend of temperature is rising but rainfall is declining,and climate change results in the potential evaporation increase and the available water resources decrease.
气候变化导致可能蒸发量增加,可利用水资源量减少。
补充资料：地表
1.地面，大地的表面。 2.指陆地的边际。 3.指地球的表面，即地壳的最外层。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条