为进一步提高等离子体弧柔性成形的表面质量，利用磁场控制弧柱的摆动状态进而控制单位面积上等离子体弧的热流密度，使之达到预期目的。
To improve the surface quality of flexible formation using plasma arc, its heat-flow density on unit area is controlled by controlling the swinging of the plasma arc with the alternate magnetic field.
对这四个焊接位姿参数的内涵进一步完善和修改，使其更适合于弧焊机器人焊接的实际需要，更通俗易懂。
The meanings of four parameters were amended, so that they are more compatible to the real nedas of arc welding robot, and easier to understand.
下一步，我们要创建弧的一部分。
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