available water supply

基本解釋

Nationwide, China's available water supply per person is one-fourth the world average.
中國全國的人均可用水供應(yīng)量僅爲世界平均水平的四分之一。
In India's wheat-growing regions, for example, pesticide and fertilizer runoff have polluted up to 40% of the available water supply.
擧個例子，印度的小麥産區(qū)可資使用的水源受殺蟲劑和化肥的汙染率已經(jīng)達到了40%。
The area of a basin may be limited by elevation changes, by the size that can be covered uniformly by the available water supply on permeable soils, or by cropping factors.
格田麪積受限於地麪高度的變化、現(xiàn)有水量均勻覆蓋於滲透性土壤的麪積大小及耕作因素。
blog.sina.com.cn

High population density, a poor ratio of available water to demand, and regional imbalances in available water supplies are serious challenges for China in managing its usable water supply.
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