steel bar butt welding

例句：

1. 1. The steel bar butt welding process is crucial for the integrity of the structure.
   钢棒对接焊接过程对于结构完整性至关重要。
2. 2.In this case, the steel bar butt welding was done manually.
   在这种情况下，钢棒对接焊接是手动完成的。
3. 3.The steel bar butt welding technique requires precise measurements and attention to detail.
   钢棒对接焊接技术需要精确测量和关注细节。