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Resistance spot welding in aluminum alloy was tested by ultrasonic immersion method with focusing probe.
摘要介绍采用水浸超声聚焦回波检测铝合金电阻点焊焊核直径.
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In the roller ultrasonic probe is a ultrasonic focusing probe which can strengthen the signal.
轮式探头内部使用了用来加强信号强度的聚焦探头.
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