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UltrasonicTesting

于 2014-10-31 发布 文件大小:6157KB
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  这是一本超声波2级考证的一本书,也是超声波专业学习者和研究者的基础书籍,很实用的。(This is a book about the ultrasonic level 2, and it is also the basis of learners of ultrasonic professional and researchers books, very practical.)

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