free-running laser

例句：

1. 1. This free-running laser is used for cutting metals.
   这个自由运行的激光用于切割金属。
2. 2.The free-running laser was used to scan the area for security purposes.
   自由运行的激光被用来扫描区域以进行安全目的。
3. 3. The free-running laser is a powerful tool for industrial applications.
   自由运行的激光是工业应用的强大工具。