在城镇、工业大型供水水源地的勘察中，都要求进行群孔抽水试验。
In the survey of the source of water supplying for town and major industry the group drilling pumping test is needed.
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。
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.
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