The results of this optimal methods shows that it has simplicity, practicability and objectivity for BP network to optimize groundwater (quality) monitoring sites.

结果表明：BP网络用于地下水环境监测点优选具有简单、实用和客观性好的特点。

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The monitoring sites of water quality were arranged according to the water quality characteristics of wastewater, and the pollution sources and hydrogeology were investigated comprehensively.

根据污水水质的特点，布设水质监测点，对污染源、水文地质等进行综合调查。

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In Edinburgh, 18 out of 38 air quality monitoring sites breached acceptable levels of the pollutant, while Aberdeen Council expressed concern over meeting the target near busy roads, the charity said.

BBC: Valley 'most polluted area'