The wastewater of hexanolactam (nylon) fiber production in Shijiazhuang Synthetic Fiber manufactory is high concentrated with organic nitrogen compounds.

己内酰胺锦纶化纤废水属于高含氮高浓度有机废水。

The principle of sensor digital sum calculated technology is discussed,and the application of digital sum calculated technology in steel works of Shijiazhuang Iron and Streel Company is cited.

分析了电子称术的原,介绍了术在石钢炼钢厂的应用实例。