青云翻译

The hardness of the nugget area in particular height may be due to the presence of the steel grain

Particularly high weld nucleus hardness steel grain may be due to the existence of

Welds the nuclear area degree of hardness special high place is possibly as a result of the steel crystal grain existence

Solder the hardness may be particularly high, because the steel die there is the

Particularly high weld nucleus hardness steel grain may be due to the existence of