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研究设计了一种新型的激光超声用光频鉴频系统，它具有抗干扰能力强、稳定度高、能自动适应不同反射率被检测物体等特点，在实际使用中取得了满意的结果．
A new type of optical frequency discrimination system for laser ultrasound is researched and designed. It has the characteristics of strong anti-jamming capability, high stability and being able to automatically adapt to objects with different reflectance. Satisfactory results have been obtained in practical use.