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ULTRASONIC METHOD OF MEASURING THE SOUND ATTENUATION FACTOR IN MATERIAL SPECIMENS
ULTRASONIC METHOD OF MEASURING THE SOUND ATTENUATION FACTOR IN MATERIAL SPECIMENS
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机译:超声测量材料试样声衰减因子的方法
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摘要
the invention относитс to the non-destructive control and can be used дл определени затухани and speed распространени elastic waves in samples материа lowe. the purpose of изобретени , improving
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