
Metallic materials - Knoop hardness test - Part 3: Calibration of reference blocks (ISO 4545-3:2017)
出版:Osterreichisches Normungsinstitut/Austrian Standards

專家解讀視頻
ISO 4545-3 : 2017 - Identical
ISO 4545-3 : 2017 - Identical
EN ISO 4545-3 : 2018 - Identical