【Daily Question No. 127】November 28, 2017

2017-11-28View Original

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【Daily Question No. 127】November 28, 2017. Hardness refers to a material’s ability to resist local plastic deformation, that is, its ability to resist being pressed by hard objects. Common types of hardness include (). Multiple choice: A. HB B. HV C. HR D. HL abcd. For management purposes, if you need to view content from a few days ago, please go to the summary post below. 2017 Q&A Summary Thread (updates have started) http://bbs.hcbbs.com/thread-1657793-1-1.html 2017 Daily Question Summary Thread (updates have started) http://bbs.hcbbs.com/thread-1657794-1-1.html 2016 Q&A Summary Thread (updates completed) http://bbs.hcbbs.com/thread-1597792-1-1.html

Reply #22017-11-28

ABCD Brinell hardness (HB); Rockwell hardness (HR); Vickers hardness (HV)

Reply #32017-11-28

A、 HB B、 HV C、 HR

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【Daily Question No. 127】November 28, 2017

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