碰到焊接管材时，这些探头可手动焊接或者自动焊接。
In the case of welded tube and pipe, test heads can be provided for manual or automated weld following.
安装之前，使用手动和电动工具，焊接设备，组装机械设备。
Assemble machinery and equipment prior to installation using hand and power tools and welding equipment.
以同样方式，不允许改变实现焊接的手段(手动、机械化或自动的)。
In the same way, it is not allowed to change the means of implementation (manual, mechanised or automated).
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