Ultrasonic flaw detection in large-grained materials is difficult because of multiple scattering from material microstructure (grain noise).
由于粗晶材料中材料微结构引起的散射(结构噪声)，使得超声探伤比较困难。
Ultrasonic flaw detection in large-grained materials is difficult because of multiple scattering from material microstructure (grain noise).
由于粗晶材料中材料微结构引起的散射(结构噪声)，使得超声探伤比较困难。
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