焊接人员 meaning in English

welding crew
welding gang

Plastics welding personnel - qualification testing of welders - thermoplastics welded assemblies
塑料制品焊接人员.焊工资格测试.热塑焊接组件
Plastics welding personnel - qualification testing of welders - thermoplastics welded assemblies
塑料焊接人员.焊工的资格检验.热塑塑料焊接组件
Plastics welding personnel - approval testing of welders - thermoplastics welded assemblies ; german version en 13067 : 2003
塑料焊接人员.焊工的合格测试.热塑性塑料焊接组件