
Plastics - Determination of dynamic mechanical properties - Part 1: General principles (ISO 6721-1:2019)
出版:Comite Europeen de Normalisation

专家解读视频
Plastics - Determination of dynamic mechanical properties - Part 1: General principles (ISO 6721-1:2019)
出版:Comite Europeen de Normalisation
专家解读视频