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...
The stone made a dent in the roof of my car.我的汽车顶让石头砸了个坑.Recently it makes a sizable dent in this prediction.这一预言最近有了很大进展.Losing the match made quite a dent in his ego.比赛失败对他的自尊心打击极大....