| 摘要 |
<p>The ledges are provided with a longitudinal groove. The sheath tubing and the ledges are polished and resistance welding is carried out with the current applied through the sheath wall, when the weld head is deformed to fill the groove in the ledge along the joint. The method is intended for Zr-fuel elements of a type that require centering in meshes of spacer grids or are stacked on top of each other.</p> |
