The data suggested water under the moon's surface was a factor in controlling the magnetic field.

结果数据表明，卫星地下水是控制磁场的一个因素。

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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.

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。

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For this issue, the method, which is the quality controlling of spot welding in the external direct current magnetic field, will be discussed by this article.

针对这个问题，本文探讨了外加直流磁场改善点焊质量的方法。

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