three converging electron beam

例句：

1. 1.The three-beam laser is used for cutting metals.
   三束激光用于切割金属。
2. 2.The three-beam microscope allows scientists to see more detail in their samples.
   三束显微镜使科学家能够看到样本中的更多细节。
3. 3. The three-beam system is designed to provide precise control over the movement of the electron beam.
   三束系统设计用来精确控制电子束的运动。