Research goal: to definite the status of the land usage right circulation in rural area in the land utilization history evolution, and to study the development tendency.
研究目的：确定农村土地使用权流转制度在土地利用历史演进中的地位，对其产生的必然依据和发展趋势进行研究。
Through multiple Wells pumping, the groundwater circulation condition is changed, thus water is drinkable finally, and sets a basis of comprehensive utilization of Ordovician water in the region.
通过群孔抽水试验，改变了地下水的循环条件，使水质达到了生活用水导致标准，为此区奥灰水的综合利用打下了基础。
The dissertation concerned closely with the utilization of futures market in the grain circulation system reform.
本文紧紧围绕我国粮食流通体制改革中的期货市场利用问题进行研究。
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