
Metallic materials - Knoop hardness test - Part 2: Verification and calibration of testing machines (ISO 4545-2:2017)
出版:Osterreichisches Normungsinstitut/Austrian Standards

专家解读视频
Metallic materials - Knoop hardness test - Part 2: Verification and calibration of testing machines (ISO 4545-2:2017)
出版:Osterreichisches Normungsinstitut/Austrian Standards
专家解读视频