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标题: MIL-T-4638B [打印本页]

作者: sigh007 时间: 2012-3-24 11:15:02 标题: MIL-T-4638B

MIL-T-4638B, MILITARY SPECIFICATION, TESTERS, MATERIAL HARDNESS (ROCKWELL TYPE) (15 FEB 1985)., This specification covers requirements for hardness testers for testing the hardness of ferrous and nonferrous metals.

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