tramp iron短语¹¹⁴⁴⁶⁷⁺⁴ 基本例句 混杂铁块 A series of RE magnet removal equipment of tramp iron and their main structure are introduced in this article, and their application on the manufacture of civil explosive materials are also described. 文章介绍稀土永磁除铁器的系列品种、构造特点，及其在民爆器材生产中的应用。 chemyq