large beam laser specialization大射线激光专业化

large screen laser激光大屏幕

large scale laser instrument大型激光装置

large area laser alloying大面积激光合金化

large spot laser大光斑激光

large area laser screen大面积激光光幕靶

large pulse laser specialization大脉冲激光专业化

large power laser cluster大功率激光束

large powerful laser system大型强激光系统