稀缺性意味着可用资源不足以满足所有的需求。
Scarcity means that available resources are insufficient to satisfy all wants and needs.
针对井渠结合灌区目前存在的地下水位下降、可用水量不足等问题，提出了运用多年的各种水资源均衡调节的方法。
In this paper, system analysis method is applied, a model of optimal conjunctive operation of surface water and groundwater resources for Fuyang, Huaibei district is established.
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