bottom blow acid converter steel

例句：

1. 1. The engineer used a bottom blowto remove the blockage.
   工程师使用底部吹气来清除堵塞。
2. 2. Duringthe construction, the workersused a bottom blow to clearthe area.
   施工期间，工人们使用底部吹气来清理区域。
3. 3. The bottomblow was crucial in removing the debrisfrom the site.
   底部吹气在从现场清除碎片中至关重要。