无芯棒拔制是冷拔钢管生产中应用最广泛的一种生产方法.Non - mandrel drawing is a method widely used in cold drawn pipe production.介绍了一种分析牛角芯棒上热推弯管成形过程的实验解析法.Introduce an experimental analytics axis - thrust tube bending on horn mandrel.提出了小型无缝钢管生产机...
In the face of mass rioting, the old shibboleths were reduced to embarrassing emptiness.在大规模暴乱面前, 这种陈词滥调变成了令人难堪的空话.Before we scan the present landscape slaying a couple of shibboleths.在我们审视当前格局之前,有必要先来破除两个落伍的观点....