conventional welding duty

例句：

1. 1. Theengineers are responsible for the conventional welding duty during the construction phase.
   工程师在施工阶段负责常规焊接工作。
2. 2. The company's main focus is on providing high-quality conventional welding services.
   该公司的主要重点是提供高质量的常规焊接服务。
3. 3. The teamwas assigned to perform the conventional welding duty on the new bridge project.
   该团队被分配到执行新桥梁项目的常规焊接工作。