位于小孔上方的等离子体叫做等离子体云，而存在于小孔内部的等离子体则称为孔内等离子。
Plasma resides both outside and inside the keyhole, known as plasma plume and keyhole plasma, respectively.
激光焊接中，光致等离子体的产生，尤其是小孔外闪烁的明亮蓝色等离子体云，影响着激光焊接过程的进行。
The welding process is influenced by the plasma produced by laser irradiation. Plasma plume above the keyhole is the bright, often bluish, flash frequently seen during laser welding.
激光焊接中，光致等离子体的产生，尤其是小孔外闪烁的明亮蓝色等离子体云，影响着激光焊接过程的进行。
The welding process is influenced by the plasma produced by laser irradiation. Plasma plume above the keyhole is the bright, often bluish, flash frequently seen during laser welding.
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