As the characteristics of different oils in the industrial waste water and pollution sources of the railway enterprises, the non dispersion infrared photometry is the first selection.
根据铁路主要企业含油工业废水中油种来源及污染源特点，非分散红外光度法为首选方法。
As the characteristics of different oils in the industrial waste water and pollution sources of the railway enterprises, the non dispersion infrared photometry is the first selection.
根据铁路主要企业含油工业废水中油种来源及污染源特点，非分散红外光度法为首选方法。
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