近年来,在我国矿山爆破作业中,已经广泛地采用了微差爆破技术,毫秒延期电雷管做为微差爆破的主要起爆器材,也得到了普遍地应用。对于工业毫秒延期电雷管的制造和研究也取得了很大进展。目前在使用和研究中的工业毫秒延期电雷管大致有以下几类:1.从管体材料分:有金属壳毫秒延期 In recent years, mine blasting operations in our country, has been widely adopted by the millisecond blasting technology, millisecond detonation delay detonation as the main blasting equipment, but also has been widely used. Great progress has also been made in the manufacture and research of industrial millisecond delay detonators. Currently in use and research in industrial millisecond delay detonators generally have the following categories: 1. From the tube material points: a metal shell millisecond delay