At each end of the shaft 1 there is an auxiliary welding head 3 which is also movable horizontally and vertically by known means MM2.

两端的轴1有一个辅助焊接头3也是动产的横向和纵向的已知手段平方毫米。

youdao

At each end of the shaft 1 there is an auxiliary welding head 3 which is also movable horizontally and vertically by known means MM2.

两端的轴1有一个辅助焊接头3也是动产的横向和纵向的已知手段平方毫米。

youdao