| 主权项 |
1. A welding apparatus including:
a first welding element; a second welding element; and a support on which the first welding element and the second welding element are mounted, the support being configured to be movable relative to the welding apparatus, the support being configured to move the first welding element and the second welding element respectively from a first start position to a first end position and from a second start position to a second end position as the support is moved relative to the welding apparatus such that welding points of the first welding element and the second welding element are altered,wherein the first welding element and the second welding element are oriented to mirror one another at the first start position and at the second start position, and the first welding element and the second welding element are oriented to mirror one another at the first end position and at the second end position. |
