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Mannesmann inclusion detection by analysing surfboard
met.
曼内斯曼冲浪板形试样夹杂物超声波检测
(【技】铸坯夹杂物检测法之一。首先沿铸坯横截面方向截取一段铸坯试样,然后轧扁展宽,形如冲浪板,使其中的夹杂物被压扁伸长,以利后续的超声波检测。)
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