Man-made static magnetic fields are generated wherever DC currents are used, such as in electric trains or industrial processes such as aluminium production and in gaswelding.
在使用直流电的地方即产生人为的静电磁场，例如在电车或诸如铝生产和气焊等工业操作程序中。
2
PP-H welding method is commonly used in thermal contact welding and the use of hot gaswelding electrode .
H 的焊接常用的方法是热接触焊接和使用焊条进行热气焊。
3
Microstructure and properties of repaired welding area in large aluminum alloy ZL114A castings by MIG (Metal Inertia Gas) welding technology were studied.