argon arc cutting

例句：

1. 1.The engineer used a laser to cut the metal sheet into precise shapes.
   工程师使用激光将金属板材切割成精确的形状。
2. 2. During the construction process, the steel beam was precisely cut by the robot arm.
   在施工过程中，钢梁被机器人手臂精确地切割。
3. 3. The cutting operation is crucial for the success of the project.
   切割操作对于项目的成功至关重要。