... diffusion welding扩散焊接 direct spot welding双面点焊 direct welding双面点焊 ...
双语例句
1
It points out that the directspotwelding of pure copper can be realized by the correct choice of pole material, pole form, welding equipment and criterion.
For this issue, the method, which is the quality controlling of spotwelding in the external direct current magnetic field, will be discussed by this article.