What is welding? And what do welders do?

什么是焊接？焊接能做什么？

The welding is mostly done by highly qualified welders.

这些焊逢几乎全由高水平的焊工完成。

Objective To investigate the status of health in the welders.

目的调查电焊工人的职业健康状况。

The body - bonnet welds are made on fully automatic MIG Welders.

阀体-阀帽的焊接工艺是采用完全自动化的mig焊接设备进行的。

Welding operations are performed by appropriately qualified welders.

焊接操作由具有资质的焊工实施。