welding by one side

例句：

1. 1.The welding process is crucial for the structural integrity of the bridge.
   焊接过程对于桥梁的结构完整性至关重要。
2. 2. The engineers used specialized equipment to ensure a perfect joint between the two pieces of metal.
   工程师们使用特殊的设备确保两块金属之间完美结合。
3. 3. The welding torch was carefully positioned to avoid damaging the surrounding materials.
   焊枪被小心地定位，以避免损坏周围的材料。