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介绍磁粉检验用B型和E型标准试块的设计、结构、研制、试验和应用。结果表明 ,两种标准试块都达到了国外同类标准试块的先进水平
Describe the design, structure, development, test and application of B and E standard test blocks for magnetic particle inspection. The results show that the two standard test blocks have reached the advanced level of similar foreign standard test blocks