direct spot welding的意思|示意

It points out that the direct spot welding of pure copper can be realized by the correct choice of pole material, pole form, welding equipment and criterion.

找出了用通常方法不能点焊纯铜的原因，介绍了纯铜点焊焊核形成的过程，指出以本文为依据正确地选择电极材料、电极形状、焊接设备和确定焊接规范，就可实现纯铜的直接点。

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。