beam confining electrode

例句：

1. 1.The beam confining electrode is used to control the flow of molten metal.
   束限电极用于控制熔融金属的流动。
2. 2.The beam confining electrode is crucial for maintaining the integrity of the weld pool.
   束限电极对于保持焊缝池的完整性至关重要。
3. 3. The beam confining electrode was designed to prevent the spread of contaminants during the welding process.
   束限电极被设计用来在焊接过程中防止污染物的传播。