bull block drawing是什么意思

用法例句

By cooperating with some domestic companies and analyzing the various factors caused the post-pass work preface fracture of wire of the high-carbon steel wire dry wire drawing craft, this dissertation puts forward a new fixed amount judging method and adopts computer simulation methods to predict and control the production situation.

本文研究的对象是钢帘线生产的干式拉拔工序,研究的钢种为70#以上钢种(含碳量＞0。