In another building, workers weld solar cells together into strips, then align them by eye on a light box to form the rows and columns of cells that make up a complete solar panel.
Plug-weld the connection between the closing panel and the inner light housing under shielding gas.
用气体保护塞焊，焊接封闭板与内侧灯罩之间的接合处。
3
Light emission from the plasma in laser welding of zinc-coated plates when there appeared pinhole in the weld were analysised on magnitude and frequency ranges.