CO↓2 shielded arc welding

例句：

1. 1. The CO2 shielded arc welding process is used to join metal parts together quickly and efficiently.
   二氧化碳保护电弧焊过程用于快速且高效地连接金属部件。
2. 2. In this particular case, the use of CO2 shielded arc welding was crucial for the structuralintegrity of the new bridge.
   在这个特定的情况下，使用二氧化碳保护电弧焊对于新桥梁的结构完整性至关重要。
3. 3. The CO2 shielded arc welding technique has been shown to improve joint strength and durability compared to traditional welding methods.
   二氧化碳保护电弧焊技术已被证明在提高接头强度和耐用性方面优于传统焊接方法。