angle forwards welding

例句：

1. 1. The engineer used a special angle welding machine to fix the roof tiles.
   工程师使用一种特殊的角度焊接机器来固定屋顶瓦片。
2. 2. The construction workers were using angle welding techniques to reinforce the beams.
   建筑工人正在使用角度焊接技术加固梁。
3. 3. The angle welding process is crucial for ensuring the structural integrity of the bridge.
   角度焊接过程对于确保桥梁结构完整性至关重要。