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土柱淋滤试验是研究包气带地层防护能力的一种手段，通过对氟化物的淋滤试验研究，了解其土质对氟污染物的吸附与转化的能力，进而推测地面污水对地下潜水的影响。
Soil column leaching test is a means to study the protective capability of the strata in the gas zone. Through the leaching experiments of fluoride, it can understand the soil’s ability to adsorb and convert fluorine pollutants, and then speculate that the surface sewage on underground diving influences.