激光焊接过程中产生的等离子体对激光束有屏蔽作用，降低了焊接熔深，甚至出现缺陷。
Plasma produced in laser welding process has shielding effect to the laser beam and decreases the melting depth on even result in the defect.
激光束作为一种“工作母机”，在切割、钻空和焊接金属方面已发现是非常有用的。
As a "machine tool", the laser beam has been found useful in cutting, drilling, and welding metals.
激光束可实现时间和能量上的分光，能进行多光束同时加工，为更精密的焊接提供了条件。
Laser beam can Spectro. Can conduct many beam light while machining. for more precision the welding provide conditions.
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