According to the theory that plasma absorbs laser energy and with the experiment method which elevates the nozzle during welding, the effect of magnetic field on plasma control is discussed.

本文从等离子体吸收激光能量的理论入手，采用提升喷嘴的实验方法，系统研究了电磁场参数对等离子体控制的影响。

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This article discusses the method and accuracy for header differential steel nozzle fillet magnetic particle inspection, and shows the actual dissection result that the author did on products.

对集箱异种钢管接头角焊缝磁粉探伤的方法和准确性进行了探讨，并在产品上进行了实物解剖验证。

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