为控制路内企业使用的清洗剂的质量，对丰台机务段近年来使用的几种水基金属清洗剂进行了质量分析。
For the controlling the quality of detergent used by the unites in the railway system , we have done the analysis of the quality of the several kinds of water base metal detergents used by Fengtai locomotive maintenance service unit .
丰台机务段