Ceramic elements tend to be ionic or covalent bonded elements. A material held together by possibly sort of bond will often fracture before any plastic deformation usually takes put, which results in lousy toughness in these resources. Die mense wat hier die inisiatief geneem het, was Gladys Quick, Marjorie Johnstone https://handgemaakte21974.wikiinside.com/1021583/lijntekening_options