
Methods of test for masonry units?- Part?5: Determination of the active soluble salts content of clay masonry units; German version EN?772-5:2016+AC:2017
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
Methods of test for masonry units?- Part?5: Determination of the active soluble salts content of clay masonry units; German version EN?772-5:2016+AC:2017
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频