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超声检测的共振法
avia.
resonance method of ultrasonic inspection
(一种检测材料厚度或内部损伤的方法,通过将不同频率的超声波能量注人材料来完成。在给定材料厚度的情况下,特定能量频率的超声波能够产生最大回波。当超声波设备经特定厚度校准,且这个厚度变化了,那么,在检测过程中,将给出这种变化的听觉和视觉显示)
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