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用 Q 开关 YAG 激光器在金属材料中激励超声脉冲,用压电换能器接收超声脉冲,并对某些人工缺陷对超声脉冲的响应进行了实验研究。
The Q-switched YAG laser is used to excite the ultrasonic pulse in the metal material, the piezoelectric transducer to receive the ultrasonic pulse, and the experimental study on the response of some artificial defects to the ultrasonic pulse.