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本课程起止时间为:2021-03-08到2021-05-31
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1 Mechanical Properties of Engineering Materials Mechanical Properties of Engineering Materials
1、 问题:In the following hardness measurement method, the diamond head is used for ( ).
选项:
A:HV
B:HRC
C:HB
D:HRA
答案: 【HV】 点我阅读全文